Travel with Axel,
get the best price.

Route overview: Washington, DC to Saint Louis (STL) flight deals

Washington → Saint Louis

Jan 18, 2027 · return Feb 1, 2027

DCA → STL1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Mon, Jan 18 – Mon, Feb 1

American Airlines
7:59 pmDCA
2h 42m
Nonstop
9:41 pmSTL
American Airlines
6:00 amSTL
2h 3m
Nonstop
9:03 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

American Airlines
8:20 amDCA
2h 48m
Nonstop
10:08 amSTL
American Airlines
6:00 amSTL
2h 3m
Nonstop
9:03 amDCA

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Jan 18 – Mon, Feb 1

Southwest Airlines
4:40 pmDCA
5h 20m
ATL · 1h 40m
9:00 pmSTL
Southwest Airlines
10:35 amSTL
3h 45m
BNA · 1h
3:20 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

United Airlines
6:30 amDCA
5h 12m
ORD · 1h 8m
10:42 amSTL
United Airlines
6:00 amSTL
5h 29m
EWR · 1h 39m
12:29 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

Delta Air Lines
9:45 amDCA
4h 45m
DTW · 1h 21m
1:30 pmSTL
Delta Air Lines
10:14 amSTL
5h 24m
DTW · 2h 20m
4:38 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

Southwest Airlines
2:40 pmDCA
2h 25m
Nonstop
4:05 pmSTL
Southwest Airlines
10:35 amSTL
3h 45m
BNA · 1h
3:20 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

American Airlines
11:46 amDCA
5h 5m
ORD · 1h 21m
3:51 pmSTL
American Airlines
6:00 amSTL
2h 3m
Nonstop
9:03 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Jan 18 – Mon, Feb 1

American Airlines
6:17 amDCA
5h 2m
CLT · 1h 17m
10:19 amSTL
American Airlines
6:00 amSTL
2h 3m
Nonstop
9:03 amDCA

Round-trip total · 1 adult · Taxes included

Make this trip yours

DCA ⇄ STL

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, American Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

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 routeJan 17, 2027 → Jan 31, 2027Jan 19, 2027 → Feb 2, 2027
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.

Route overview: Washington, DC to Saint Louis (STL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-18 → 2027-02-01American AirlinesAA4664 / AA2153$310.002026-10-29T01:02:54Z
2027-01-18 → 2027-02-01Southwest AirlinesWN4901 + WN261 / WN665 + WN473$265.002026-10-29T01:02:54Z
2027-01-18 → 2027-02-01United AirlinesUA1793 + UA3556 / UA1344 + UA4172$295.002026-10-29T01:02:54Z
2027-01-18 → 2027-02-01Delta Air LinesDL1558 + DL1371 / DL2868 + DL1454$305.002026-10-29T01:02:54Z
2027-01-18 → 2027-02-01American AirlinesAA4458 / AA2153$310.002026-10-29T01:02:54Z
2027-01-18 → 2027-02-01Southwest AirlinesWN754 / WN665 + WN473$277.502026-10-29T01:02:54Z
2027-01-18 → 2027-02-01American AirlinesAA2612 + AA1713 / AA2153$297.502026-10-29T01:02:54Z
2027-01-18 → 2027-02-01American AirlinesAA1617 + AA2486 / AA2153$297.502026-10-29T01:02:54Z

2027-01-18 → 2027-02-01 · $310.00

  • American Airlines AA4664: DCA 2027-01-18 19:59:00 → STL 2027-01-18 21:41:00; nonstop; 162 minutes. Local airport times.
  • American Airlines AA2153: STL 2027-02-01 06:00:00 → DCA 2027-02-01 09:03:00; nonstop; 123 minutes. Local airport times.

2027-01-18 → 2027-02-01 · $265.00

  • Southwest Airlines WN4901 / WN261: DCA 2027-01-18 16:40:00 → STL 2027-01-18 21:00:00; 1 stop(s) via ATL; 320 minutes. Local airport times.
    • WN4901: DCA 2027-01-18 16:40:00 → ATL 2027-01-18 18:35:00; layover at ATL: 100 minutes.
    • WN261: ATL 2027-01-18 20:15:00 → STL 2027-01-18 21:00:00.
  • Southwest Airlines WN665 / WN473: STL 2027-02-01 10:35:00 → DCA 2027-02-01 15:20:00; 1 stop(s) via BNA; 225 minutes. Local airport times.
    • WN665: STL 2027-02-01 10:35:00 → BNA 2027-02-01 11:40:00; layover at BNA: 60 minutes.
    • WN473: BNA 2027-02-01 12:40:00 → DCA 2027-02-01 15:20:00.

2027-01-18 → 2027-02-01 · $295.00

  • United Airlines UA1793 / UA3556: DCA 2027-01-18 06:30:00 → STL 2027-01-18 10:42:00; 1 stop(s) via ORD; 312 minutes. Local airport times.
    • UA1793: DCA 2027-01-18 06:30:00 → ORD 2027-01-18 07:52:00; layover at ORD: 68 minutes.
    • UA3556: ORD 2027-01-18 09:00:00 → STL 2027-01-18 10:42:00.
  • United Airlines UA1344 / UA4172: STL 2027-02-01 06:00:00 → DCA 2027-02-01 12:29:00; 1 stop(s) via EWR; 329 minutes. Local airport times.
    • UA1344: STL 2027-02-01 06:00:00 → EWR 2027-02-01 09:21:00; layover at EWR: 99 minutes.
    • UA4172: EWR 2027-02-01 11:00:00 → DCA 2027-02-01 12:29:00.

2027-01-18 → 2027-02-01 · $305.00

  • Delta Air Lines DL1558 / DL1371: DCA 2027-01-18 09:45:00 → STL 2027-01-18 13:30:00; 1 stop(s) via DTW; 285 minutes. Local airport times.
    • DL1558: DCA 2027-01-18 09:45:00 → DTW 2027-01-18 11:22:00; layover at DTW: 81 minutes.
    • DL1371: DTW 2027-01-18 12:43:00 → STL 2027-01-18 13:30:00.
  • Delta Air Lines DL2868 / DL1454: STL 2027-02-01 10:14:00 → DCA 2027-02-01 16:38:00; 1 stop(s) via DTW; 324 minutes. Local airport times.
    • DL2868: STL 2027-02-01 10:14:00 → DTW 2027-02-01 12:46:00; layover at DTW: 140 minutes.
    • DL1454: DTW 2027-02-01 15:06:00 → DCA 2027-02-01 16:38:00.

2027-01-18 → 2027-02-01 · $310.00

  • American Airlines AA4458: DCA 2027-01-18 08:20:00 → STL 2027-01-18 10:08:00; nonstop; 168 minutes. Local airport times.
  • American Airlines AA2153: STL 2027-02-01 06:00:00 → DCA 2027-02-01 09:03:00; nonstop; 123 minutes. Local airport times.

2027-01-18 → 2027-02-01 · $277.50

  • Southwest Airlines WN754: DCA 2027-01-18 14:40:00 → STL 2027-01-18 16:05:00; nonstop; 145 minutes. Local airport times.
  • Southwest Airlines WN665 / WN473: STL 2027-02-01 10:35:00 → DCA 2027-02-01 15:20:00; 1 stop(s) via BNA; 225 minutes. Local airport times.
    • WN665: STL 2027-02-01 10:35:00 → BNA 2027-02-01 11:40:00; layover at BNA: 60 minutes.
    • WN473: BNA 2027-02-01 12:40:00 → DCA 2027-02-01 15:20:00.

2027-01-18 → 2027-02-01 · $297.50

  • American Airlines AA2612 / AA1713: DCA 2027-01-18 11:46:00 → STL 2027-01-18 15:51:00; 1 stop(s) via ORD; 305 minutes. Local airport times.
    • AA2612: DCA 2027-01-18 11:46:00 → ORD 2027-01-18 13:08:00; layover at ORD: 81 minutes.
    • AA1713: ORD 2027-01-18 14:29:00 → STL 2027-01-18 15:51:00.
  • American Airlines AA2153: STL 2027-02-01 06:00:00 → DCA 2027-02-01 09:03:00; nonstop; 123 minutes. Local airport times.

2027-01-18 → 2027-02-01 · $297.50

  • American Airlines AA1617 / AA2486: DCA 2027-01-18 06:17:00 → STL 2027-01-18 10:19:00; 1 stop(s) via CLT; 302 minutes. Local airport times.
    • AA1617: DCA 2027-01-18 06:17:00 → CLT 2027-01-18 07:58:00; layover at CLT: 77 minutes.
    • AA2486: CLT 2027-01-18 09:15:00 → STL 2027-01-18 10:19:00.
  • American Airlines AA2153: STL 2027-02-01 06:00:00 → DCA 2027-02-01 09:03:00; nonstop; 123 minutes. Local airport times.

Explore this route