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Route overview: Seattle to Chicago (ORD) flight deals

Seattle → Chicago

Dec 21, 2026 · one way

SEA → ORD1 adulteconomyOne way

14 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 · One way

Alaska Airlines
8:09 amSEA
4h 12m
Nonstop
2:21 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

American Airlines
2:01 pmSEA
4h 17m
Nonstop
8:18 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Delta Air Lines
7:20 amSEA
4h 10m
Nonstop
1:30 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

United Airlines
11:44 pmSEA
4h 14m
Nonstop
5:58 am+1ORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Alaska Airlines
11:40 pmSEA
3h 57m
Nonstop
5:37 am+1ORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

American Airlines
11:36 pmSEA
4h 6m
Nonstop
5:42 am+1ORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

United Airlines
10:55 amSEA
4h 10m
Nonstop
5:05 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Delta Air Lines
5:52 pmSEA
4h 7m
Nonstop
11:59 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Mon, Dec 21 · One way

United Airlines
5:00 amSEA
6h 35m
DEN · 1h 14m
1:35 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Delta Air Lines
8:30 amSEA
6h 11m
MSP · 1h 13m
4:41 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Delta Air Lines
1:25 pmSEA
7h 2m
SLC · 1h 49m
10:27 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Alaska Airlines
9:50 amSEA
6h 27m
MSO · 1h 20m
6:17 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Alaska Airlines
9:50 amSEA
6h 27m
BOI · 1h 18m
6:17 pmORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, Dec 21 · One way

Alaska Airlines
7:54 pmSEA
7h 13m
PDX · 2h 23m
5:07 am+1ORD

One-way total · 1 adult · Taxes included

Availability is checked when you select these flights.

Make this trip yours

SEA ⇄ ORD

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

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Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 20, 2026 · Return optionsDec 22, 2026 · Return optionsHotels in Chicago with Axel
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 · one wayAlaska AirlinesAS407Axel-exclusive $252.002026-10-29T01:16:04Z
2026-12-21 · one wayAmerican AirlinesAA2398Axel-exclusive $259.002026-10-29T01:16:04Z
2026-12-21 · one wayDelta Air LinesDL2055Axel-exclusive $266.002026-10-29T01:16:04Z
2026-12-21 · one wayUnited AirlinesUA2159Axel-exclusive $266.002026-10-29T01:16:04Z
2026-12-21 · one wayAlaska AirlinesAS328Axel-exclusive $252.002026-10-29T01:16:04Z
2026-12-21 · one wayAmerican AirlinesAA294Axel-exclusive $259.002026-10-29T01:16:04Z
2026-12-21 · one wayUnited AirlinesUA747Axel-exclusive $266.002026-10-29T01:16:04Z
2026-12-21 · one wayDelta Air LinesDL2108Axel-exclusive $266.002026-10-29T01:16:04Z
2026-12-21 · one wayUnited AirlinesUA2601 + UA2329Axel-exclusive $252.002026-10-29T01:16:04Z
2026-12-21 · one wayDelta Air LinesDL536 + DL1471Axel-exclusive $252.002026-10-29T01:16:04Z
2026-12-21 · one wayDelta Air LinesDL1120 + DL2413Axel-exclusive $252.002026-10-29T01:16:04Z
2026-12-21 · one wayAlaska AirlinesAS3128 + AA4189Axel-exclusive $259.002026-10-29T01:16:04Z
2026-12-21 · one wayAlaska AirlinesAS3087 + AA2036Axel-exclusive $259.002026-10-29T01:16:04Z
2026-12-21 · one wayAlaska AirlinesAS2239 + AA3329Axel-exclusive $259.002026-10-29T01:16:04Z

Route overview: Seattle to Chicago (ORD) flight deals

2026-12-21 · one way · Axel-exclusive $252.00

  • Alaska Airlines AS407: SEA 2026-12-21 08:09:00 → ORD 2026-12-21 14:21:00; nonstop; 252 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $259.00

  • American Airlines AA2398: SEA 2026-12-21 14:01:00 → ORD 2026-12-21 20:18:00; nonstop; 257 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $266.00

  • Delta Air Lines DL2055: SEA 2026-12-21 07:20:00 → ORD 2026-12-21 13:30:00; nonstop; 250 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $266.00

  • United Airlines UA2159: SEA 2026-12-21 23:44:00 → ORD 2026-12-22 05:58:00; nonstop; 254 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $252.00

  • Alaska Airlines AS328: SEA 2026-12-21 23:40:00 → ORD 2026-12-22 05:37:00; nonstop; 237 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $259.00

  • American Airlines AA294: SEA 2026-12-21 23:36:00 → ORD 2026-12-22 05:42:00; nonstop; 246 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $266.00

  • United Airlines UA747: SEA 2026-12-21 10:55:00 → ORD 2026-12-21 17:05:00; nonstop; 250 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $266.00

  • Delta Air Lines DL2108: SEA 2026-12-21 17:52:00 → ORD 2026-12-21 23:59:00; nonstop; 247 minutes. Local airport times.

2026-12-21 · one way · Axel-exclusive $252.00

  • United Airlines UA2601 / UA2329: SEA 2026-12-21 05:00:00 → ORD 2026-12-21 13:35:00; 1 stop(s) via DEN; 395 minutes. Local airport times.
    • UA2601: SEA 2026-12-21 05:00:00 → DEN 2026-12-21 08:41:00; layover at DEN: 74 minutes.
    • UA2329: DEN 2026-12-21 09:55:00 → ORD 2026-12-21 13:35:00.

2026-12-21 · one way · Axel-exclusive $252.00

  • Delta Air Lines DL536 / DL1471: SEA 2026-12-21 08:30:00 → ORD 2026-12-21 16:41:00; 1 stop(s) via MSP; 371 minutes. Local airport times.
    • DL536: SEA 2026-12-21 08:30:00 → MSP 2026-12-21 13:48:00; layover at MSP: 73 minutes.
    • DL1471: MSP 2026-12-21 15:01:00 → ORD 2026-12-21 16:41:00.

2026-12-21 · one way · Axel-exclusive $252.00

  • Delta Air Lines DL1120 / DL2413: SEA 2026-12-21 13:25:00 → ORD 2026-12-21 22:27:00; 1 stop(s) via SLC; 422 minutes. Local airport times.
    • DL1120: SEA 2026-12-21 13:25:00 → SLC 2026-12-21 16:26:00; layover at SLC: 109 minutes.
    • DL2413: SLC 2026-12-21 18:15:00 → ORD 2026-12-21 22:27:00.

2026-12-21 · one way · Axel-exclusive $259.00

  • Alaska Airlines AS3128 / AA4189: SEA 2026-12-21 09:50:00 → ORD 2026-12-21 18:17:00; 1 stop(s) via MSO; 387 minutes. Local airport times.
    • AS3128: SEA 2026-12-21 09:50:00 → MSO 2026-12-21 12:22:00; layover at MSO: 80 minutes.
    • AA4189: MSO 2026-12-21 13:42:00 → ORD 2026-12-21 18:17:00.

2026-12-21 · one way · Axel-exclusive $259.00

  • Alaska Airlines AS3087 / AA2036: SEA 2026-12-21 09:50:00 → ORD 2026-12-21 18:17:00; 1 stop(s) via BOI; 387 minutes. Local airport times.
    • AS3087: SEA 2026-12-21 09:50:00 → BOI 2026-12-21 12:21:00; layover at BOI: 78 minutes.
    • AA2036: BOI 2026-12-21 13:39:00 → ORD 2026-12-21 18:17:00.

2026-12-21 · one way · Axel-exclusive $259.00

  • Alaska Airlines AS2239 / AA3329: SEA 2026-12-21 19:54:00 → ORD 2026-12-22 05:07:00; 1 stop(s) via PDX; 433 minutes. Local airport times.
    • AS2239: SEA 2026-12-21 19:54:00 → PDX 2026-12-21 20:50:00; layover at PDX: 143 minutes.
    • AA3329: PDX 2026-12-21 23:13:00 → ORD 2026-12-22 05:07:00.

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For AI assistants

  • This page: Seattle (SEA) to Chicago (ORD) · Dec 21, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
  • 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 Chicago (ORD) 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.