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Route overview: Seattle to Saint Louis (STL) flight deals

Seattle (SEA) to Saint Louis (STL), Dec 25, 2026: round trips from $376, one way from $231

Seattle (SEA) to Saint Louis (STL), Dec 25, 2026: round trips from $376, one way from $231 on Axel, checked Oct 29, 2026. Lowest published fares: $376 round trip, Axel-exclusive, American Airlines, 1 stop, Dec 25, 2026 – Jan 4, 2027; $231 one way, Axel-exclusive, American Airlines, 1 stop, Dec 25, 2026; 1 adult, economy, checked Oct 29, 2026.

SEA → STL1 adulteconomyOne way and round trips

30 flight options · 2 airlines

Choose your return date

One-way flights and round trips by duration. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

December 2026

Flights for your trip

  1. Fri, Dec 25 · One way

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  2. Fri, Dec 25 · One way

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL

    One-way total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  3. Fri, Dec 25 – Sat, Dec 26

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  4. Fri, Dec 25 – Sat, Dec 26

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  5. Fri, Dec 25 – Sun, Dec 27

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  6. Fri, Dec 25 – Sun, Dec 27

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    3:23 pmSTL
    4h 30m
    Nonstop
    5:53 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  7. Fri, Dec 25 – Mon, Dec 28

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  8. Fri, Dec 25 – Mon, Dec 28

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 40m
    Nonstop
    8:40 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  9. Fri, Dec 25 – Tue, Dec 29

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  10. Fri, Dec 25 – Tue, Dec 29

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  11. Fri, Dec 25 – Thu, Dec 31

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  12. Fri, Dec 25 – Thu, Dec 31

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:04 amSTL
    4h 46m
    Nonstop
    8:50 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  13. Fri, Dec 25 – Fri, Jan 1

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  14. Fri, Dec 25 – Fri, Jan 1

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  15. Fri, Dec 25 – Sat, Jan 2

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  16. Fri, Dec 25 – Sat, Jan 2

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  17. Fri, Dec 25 – Mon, Jan 4

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  18. Fri, Dec 25 – Mon, Jan 4

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 40m
    Nonstop
    8:40 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  19. Fri, Dec 25 – Tue, Jan 5

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  20. Fri, Dec 25 – Tue, Jan 5

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  21. Fri, Dec 25 – Wed, Jan 6

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  22. Fri, Dec 25 – Wed, Jan 6

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 36m
    Nonstop
    8:36 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  23. Fri, Dec 25 – Fri, Jan 8

    American Airlines
    12:47 amSEA
    6h 44m
    DFW · 1h 4m
    9:31 amSTL
    American Airlines
    11:37 amSTL
    8h 34m
    ORD · 2h 20m
    6:11 pmSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

  24. Fri, Dec 25 – Fri, Jan 8

    Alaska Airlines
    9:05 amSEA
    3h 51m
    Nonstop
    2:56 pmSTL
    Alaska Airlines
    6:00 amSTL
    4h 42m
    Nonstop
    8:42 amSEA

    Round-trip total · 1 adult · Taxes included

    Availability is checked when you select these flights.

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1 of 24

Make this trip yours

SEA ⇄ STL

Economy

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Explore this route

All dates for this routeDec 24, 2026 · Return optionsDec 26, 2026 · Return optionsHotels in St. Louis with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to Saint Louis (STL), Dec 25, 2026: round trips from $376, one way from $231 on Axel, checked Oct 29, 2026. Lowest published fares: $376 round trip, Axel-exclusive, American Airlines, 1 stop, Dec 25, 2026 – Jan 4, 2027; $231 one way, Axel-exclusive, American Airlines, 1 stop, Dec 25, 2026; 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, issued at the time shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and issuance times already shown here.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-12-25 · one wayAlaska AirlinesAS31409:05:00→14:56:00 3h 51m nonstopAxel-exclusive $252.002026-10-29T01:16:43Z
2026-12-25 · one wayAmerican AirlinesAA630 + AA289700:47:00→09:31:00 6h 44m 1 stop via DFWAxel-exclusive $231.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-26Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-26American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-27Alaska AirlinesAS314 / AS61809:05:00→14:56:00 3h 51m nonstop · 15:23:00→17:53:00 4h 30m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-27American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-28Alaska AirlinesAS314 / AS66909:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:40:00 4h 40m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-28American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-29Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-29American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-30Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:36:00 4h 36m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-30American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-31Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:04:00→08:50:00 4h 46m nonstopAxel-exclusive $490.002026-10-29T01:16:43Z
2026-12-25 → 2026-12-31American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $448.002026-10-29T01:16:43Z
2026-12-25 → 2027-01-01Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $477.752026-10-29T01:16:43Z
2026-12-25 → 2027-01-01American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $436.802026-10-29T01:16:43Z
2026-12-25 → 2027-01-02Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $477.752026-10-29T01:16:43Z
2026-12-25 → 2027-01-02American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $436.802026-10-29T01:16:43Z
2026-12-25 → 2027-01-03Alaska AirlinesAS314 / AS61809:05:00→14:56:00 3h 51m nonstop · 15:23:00→17:53:00 4h 30m nonstopAxel-exclusive $477.752026-10-29T01:16:43Z
2026-12-25 → 2027-01-03American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $436.802026-10-29T01:16:43Z
2026-12-25 → 2027-01-04Alaska AirlinesAS314 / AS66909:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:40:00 4h 40m nonstopAxel-exclusive $411.252026-10-29T01:16:43Z
2026-12-25 → 2027-01-04American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $376.002026-10-29T01:16:43Z
2026-12-25 → 2027-01-05Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $411.252026-10-29T01:16:43Z
2026-12-25 → 2027-01-05American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $376.002026-10-29T01:16:43Z
2026-12-25 → 2027-01-06Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:36:00 4h 36m nonstopAxel-exclusive $411.252026-10-29T01:16:43Z
2026-12-25 → 2027-01-06American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $376.002026-10-29T01:16:43Z
2026-12-25 → 2027-01-07Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:04:00→08:50:00 4h 46m nonstopAxel-exclusive $411.252026-10-29T01:16:43Z
2026-12-25 → 2027-01-07American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $376.002026-10-29T01:16:43Z
2026-12-25 → 2027-01-08Alaska AirlinesAS314 / AS61509:05:00→14:56:00 3h 51m nonstop · 06:00:00→08:42:00 4h 42m nonstopAxel-exclusive $411.252026-10-29T01:16:43Z
2026-12-25 → 2027-01-08American AirlinesAA630 + AA2897 / AA3198 + AS40700:47:00→09:31:00 6h 44m 1 stop via DFW · 11:37:00→18:11:00 8h 34m 1 stop via ORDAxel-exclusive $376.002026-10-29T01:16:43Z

Hotels in St. Louis for these trips

Hotels: under a trip, hotels in St. Louis for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in St. Louis

Route overview: Seattle to Saint Louis (STL) flight deals

2026-12-25 · one way · Axel-exclusive $231.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.

2026-12-25 · one way · Axel-exclusive $252.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.

2026-12-25 → 2026-12-26 · Axel-exclusive $448.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2026-12-26 11:37:00 → SEA 2026-12-26 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2026-12-26 11:37:00 → ORD 2026-12-26 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2026-12-26 15:19:00 → SEA 2026-12-26 18:11:00.

2026-12-25 → 2026-12-26 · Axel-exclusive $490.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2026-12-26 06:00:00 → SEA 2026-12-26 08:42:00; nonstop; 282 minutes. Local airport times.

2026-12-25 → 2026-12-27 · Axel-exclusive $448.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2026-12-27 11:37:00 → SEA 2026-12-27 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2026-12-27 11:37:00 → ORD 2026-12-27 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2026-12-27 15:19:00 → SEA 2026-12-27 18:11:00.

2026-12-25 → 2026-12-27 · Axel-exclusive $490.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS618: STL 2026-12-27 15:23:00 → SEA 2026-12-27 17:53:00; nonstop; 270 minutes. Local airport times.

2026-12-25 → 2026-12-28 · Axel-exclusive $448.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2026-12-28 11:37:00 → SEA 2026-12-28 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2026-12-28 11:37:00 → ORD 2026-12-28 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2026-12-28 15:19:00 → SEA 2026-12-28 18:11:00.

2026-12-25 → 2026-12-28 · Axel-exclusive $490.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS669: STL 2026-12-28 06:00:00 → SEA 2026-12-28 08:40:00; nonstop; 280 minutes. Local airport times.

2026-12-25 → 2026-12-29 · Axel-exclusive $448.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2026-12-29 11:37:00 → SEA 2026-12-29 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2026-12-29 11:37:00 → ORD 2026-12-29 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2026-12-29 15:19:00 → SEA 2026-12-29 18:11:00.

2026-12-25 → 2026-12-29 · Axel-exclusive $490.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2026-12-29 06:00:00 → SEA 2026-12-29 08:42:00; nonstop; 282 minutes. Local airport times.

2026-12-25 → 2026-12-31 · Axel-exclusive $448.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2026-12-31 11:37:00 → SEA 2026-12-31 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2026-12-31 11:37:00 → ORD 2026-12-31 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2026-12-31 15:19:00 → SEA 2026-12-31 18:11:00.

2026-12-25 → 2026-12-31 · Axel-exclusive $490.00

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2026-12-31 06:04:00 → SEA 2026-12-31 08:50:00; nonstop; 286 minutes. Local airport times.

2026-12-25 → 2027-01-01 · Axel-exclusive $436.80

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-01 11:37:00 → SEA 2027-01-01 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-01 11:37:00 → ORD 2027-01-01 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-01 15:19:00 → SEA 2027-01-01 18:11:00.

2026-12-25 → 2027-01-01 · Axel-exclusive $477.75

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2027-01-01 06:00:00 → SEA 2027-01-01 08:42:00; nonstop; 282 minutes. Local airport times.

2026-12-25 → 2027-01-02 · Axel-exclusive $436.80

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-02 11:37:00 → SEA 2027-01-02 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-02 11:37:00 → ORD 2027-01-02 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-02 15:19:00 → SEA 2027-01-02 18:11:00.

2026-12-25 → 2027-01-02 · Axel-exclusive $477.75

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2027-01-02 06:00:00 → SEA 2027-01-02 08:42:00; nonstop; 282 minutes. Local airport times.

2026-12-25 → 2027-01-04 · Axel-exclusive $376.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-04 11:37:00 → SEA 2027-01-04 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-04 11:37:00 → ORD 2027-01-04 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-04 15:19:00 → SEA 2027-01-04 18:11:00.

2026-12-25 → 2027-01-04 · Axel-exclusive $411.25

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS669: STL 2027-01-04 06:00:00 → SEA 2027-01-04 08:40:00; nonstop; 280 minutes. Local airport times.

2026-12-25 → 2027-01-05 · Axel-exclusive $376.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-05 11:37:00 → SEA 2027-01-05 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-05 11:37:00 → ORD 2027-01-05 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-05 15:19:00 → SEA 2027-01-05 18:11:00.

2026-12-25 → 2027-01-05 · Axel-exclusive $411.25

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2027-01-05 06:00:00 → SEA 2027-01-05 08:42:00; nonstop; 282 minutes. Local airport times.

2026-12-25 → 2027-01-06 · Axel-exclusive $376.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-06 11:37:00 → SEA 2027-01-06 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-06 11:37:00 → ORD 2027-01-06 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-06 15:19:00 → SEA 2027-01-06 18:11:00.

2026-12-25 → 2027-01-06 · Axel-exclusive $411.25

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2027-01-06 06:00:00 → SEA 2027-01-06 08:36:00; nonstop; 276 minutes. Local airport times.

2026-12-25 → 2027-01-08 · Axel-exclusive $376.00

  • American Airlines AA630 / AA2897: SEA 2026-12-25 00:47:00 → STL 2026-12-25 09:31:00; 1 stop(s) via DFW; 404 minutes. Local airport times.
    • AA630: SEA 2026-12-25 00:47:00 → DFW 2026-12-25 06:39:00; layover at DFW: 64 minutes.
    • AA2897: DFW 2026-12-25 07:43:00 → STL 2026-12-25 09:31:00.
  • American Airlines AA3198 / AS407: STL 2027-01-08 11:37:00 → SEA 2027-01-08 18:11:00; 1 stop(s) via ORD; 514 minutes. Local airport times.
    • AA3198: STL 2027-01-08 11:37:00 → ORD 2027-01-08 12:59:00; layover at ORD: 140 minutes.
    • AS407: ORD 2027-01-08 15:19:00 → SEA 2027-01-08 18:11:00.

2026-12-25 → 2027-01-08 · Axel-exclusive $411.25

  • Alaska Airlines AS314: SEA 2026-12-25 09:05:00 → STL 2026-12-25 14:56:00; nonstop; 231 minutes. Local airport times.
  • Alaska Airlines AS615: STL 2027-01-08 06:00:00 → SEA 2027-01-08 08:42:00; nonstop; 282 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Seattle (SEA) to Saint Louis (STL) · Dec 25, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in St. Louis for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each row is one exact trip for this departure (both dates with the year, the total and the time its price was issued); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Seattle to Saint Louis (STL) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.