Travel with Axel,
get the best price.

Saint Louis → Washington

Nov 21, 2026 · one way

STL → DCA1 adulteconomyOne way

9 flight options · 4 airlines

Nonstop flights

Sat, Nov 21 · One way

Southwest Airlines
8:10 amSTL
1h 55m
Nonstop
11:05 amDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

American Airlines
6:00 amSTL
2h 3m
Nonstop
9:03 amDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

American Airlines
3:51 pmSTL
2h 3m
Nonstop
6:54 pmDCA

One-way total · 1 adult · Taxes included

One-stop flights

Sat, Nov 21 · One way

United Airlines
6:00 amSTL
5h 29m
EWR · 1h 39m
12:29 pmDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

Delta Air Lines
10:14 amSTL
5h 24m
DTW · 2h 20m
4:38 pmDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

Southwest Airlines
10:35 amSTL
3h 45m
BNA · 1h
3:20 pmDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

Southwest Airlines
4:30 pmSTL
4h 25m
ATL · 1h 10m
9:55 pmDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

American Airlines
12:54 pmSTL
4h 31m
CLT · 1h 10m
6:25 pmDCA

One-way total · 1 adult · Taxes included

Sat, Nov 21 · One way

American Airlines
11:37 amSTL
5h 22m
ORD · 1h 57m
5:59 pmDCA

One-way total · 1 adult · Taxes included

Make this trip yours

STL ⇄ DCA

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, Southwest 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

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
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.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-21 · one waySouthwest AirlinesWN4137$201.502026-10-29T01:28:26Z
2026-11-21 · one wayAmerican AirlinesAA2153$227.502026-10-29T01:28:26Z
2026-11-21 · one wayUnited AirlinesUA1344 + UA4172$214.502026-10-29T01:28:26Z
2026-11-21 · one wayDelta Air LinesDL2868 + DL1454$221.002026-10-29T01:28:26Z
2026-11-21 · one wayAmerican AirlinesAA4769$227.502026-10-29T01:28:26Z
2026-11-21 · one waySouthwest AirlinesWN665 + WN473$188.502026-10-29T01:28:26Z
2026-11-21 · one waySouthwest AirlinesWN3091 + WN2357$188.502026-10-29T01:28:26Z
2026-11-21 · one wayAmerican AirlinesAA2486 + AA612$208.002026-10-29T01:28:26Z
2026-11-21 · one wayAmerican AirlinesAA3198 + AA523$208.002026-10-29T01:28:26Z

2026-11-21 · one way · $201.50

  • Southwest Airlines WN4137: STL 2026-11-21 08:10:00 → DCA 2026-11-21 11:05:00; nonstop; 115 minutes. Local airport times.

2026-11-21 · one way · $227.50

  • American Airlines AA2153: STL 2026-11-21 06:00:00 → DCA 2026-11-21 09:03:00; nonstop; 123 minutes. Local airport times.

2026-11-21 · one way · $214.50

  • United Airlines UA1344 / UA4172: STL 2026-11-21 06:00:00 → DCA 2026-11-21 12:29:00; 1 stop(s) via EWR; 329 minutes. Local airport times.
    • UA1344: STL 2026-11-21 06:00:00 → EWR 2026-11-21 09:21:00; layover at EWR: 99 minutes.
    • UA4172: EWR 2026-11-21 11:00:00 → DCA 2026-11-21 12:29:00.

2026-11-21 · one way · $221.00

  • Delta Air Lines DL2868 / DL1454: STL 2026-11-21 10:14:00 → DCA 2026-11-21 16:38:00; 1 stop(s) via DTW; 324 minutes. Local airport times.
    • DL2868: STL 2026-11-21 10:14:00 → DTW 2026-11-21 12:46:00; layover at DTW: 140 minutes.
    • DL1454: DTW 2026-11-21 15:06:00 → DCA 2026-11-21 16:38:00.

2026-11-21 · one way · $227.50

  • American Airlines AA4769: STL 2026-11-21 15:51:00 → DCA 2026-11-21 18:54:00; nonstop; 123 minutes. Local airport times.

2026-11-21 · one way · $188.50

  • Southwest Airlines WN665 / WN473: STL 2026-11-21 10:35:00 → DCA 2026-11-21 15:20:00; 1 stop(s) via BNA; 225 minutes. Local airport times.
    • WN665: STL 2026-11-21 10:35:00 → BNA 2026-11-21 11:40:00; layover at BNA: 60 minutes.
    • WN473: BNA 2026-11-21 12:40:00 → DCA 2026-11-21 15:20:00.

2026-11-21 · one way · $188.50

  • Southwest Airlines WN3091 / WN2357: STL 2026-11-21 16:30:00 → DCA 2026-11-21 21:55:00; 1 stop(s) via ATL; 265 minutes. Local airport times.
    • WN3091: STL 2026-11-21 16:30:00 → ATL 2026-11-21 19:00:00; layover at ATL: 70 minutes.
    • WN2357: ATL 2026-11-21 20:10:00 → DCA 2026-11-21 21:55:00.

2026-11-21 · one way · $208.00

  • American Airlines AA2486 / AA612: STL 2026-11-21 12:54:00 → DCA 2026-11-21 18:25:00; 1 stop(s) via CLT; 271 minutes. Local airport times.
    • AA2486: STL 2026-11-21 12:54:00 → CLT 2026-11-21 15:42:00; layover at CLT: 70 minutes.
    • AA612: CLT 2026-11-21 16:52:00 → DCA 2026-11-21 18:25:00.

2026-11-21 · one way · $208.00

  • American Airlines AA3198 / AA523: STL 2026-11-21 11:37:00 → DCA 2026-11-21 17:59:00; 1 stop(s) via ORD; 322 minutes. Local airport times.
    • AA3198: STL 2026-11-21 11:37:00 → ORD 2026-11-21 12:59:00; layover at ORD: 117 minutes.
    • AA523: ORD 2026-11-21 14:56:00 → DCA 2026-11-21 17:59:00.

More dates for this route