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Washington → Saint Louis

Dec 21, 2026 · return Dec 22, 2026

DCA → STL1 adulteconomyRound trip

10 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
2:40 pmDCA
2h 25m
Nonstop
4:05 pmSTL
Southwest Airlines
8:40 amSTL
1h 55m
Nonstop
11:35 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

American Airlines
7:59 pmDCA
2h 42m
Nonstop
9:41 pmSTL
American Airlines
3:51 pmSTL
2h 3m
Nonstop
6:54 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
8:25 amDCA
2h 30m
Nonstop
9:55 amSTL
Southwest Airlines
8:40 amSTL
1h 55m
Nonstop
11:35 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

American Airlines
8:20 amDCA
2h 48m
Nonstop
10:08 amSTL
American Airlines
3:51 pmSTL
2h 3m
Nonstop
6:54 pmDCA

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Tue, Dec 22

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, Dec 21 – Tue, Dec 22

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, Dec 21 – Tue, Dec 22

Southwest Airlines
4:40 pmDCA
5h 20m
ATL · 1h 40m
9:00 pmSTL
Southwest Airlines
8:40 amSTL
1h 55m
Nonstop
11:35 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
9:05 amDCA
5h 35m
BNA · 2h 15m
1:40 pmSTL
Southwest Airlines
8:40 amSTL
1h 55m
Nonstop
11:35 amDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

American Airlines
6:17 amDCA
5h 2m
CLT · 1h 17m
10:19 amSTL
American Airlines
3:51 pmSTL
2h 3m
Nonstop
6:54 pmDCA

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

American Airlines
11:46 amDCA
5h 5m
ORD · 1h 21m
3:51 pmSTL
American Airlines
3:51 pmSTL
2h 3m
Nonstop
6:54 pmDCA

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.

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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)
2026-12-21 → 2026-12-22Southwest AirlinesWN754 / WN1614$362.502026-10-29T01:02:54Z
2026-12-21 → 2026-12-22American AirlinesAA4664 / AA4769$387.502026-10-29T01:02:54Z
2026-12-21 → 2026-12-22United AirlinesUA1793 + UA3556 / UA1344 + UA4172$368.762026-10-29T01:02:54Z
2026-12-21 → 2026-12-22Delta Air LinesDL1558 + DL1371 / DL2868 + DL1454$381.262026-10-29T01:02:54Z
2026-12-21 → 2026-12-22Southwest AirlinesWN1545 / WN1614$362.502026-10-29T01:02:54Z
2026-12-21 → 2026-12-22American AirlinesAA4458 / AA4769$387.502026-10-29T01:02:54Z
2026-12-21 → 2026-12-22Southwest AirlinesWN4901 + WN261 / WN1614$346.882026-10-29T01:02:54Z
2026-12-21 → 2026-12-22Southwest AirlinesWN1514 + WN1472 / WN1614$346.882026-10-29T01:02:54Z
2026-12-21 → 2026-12-22American AirlinesAA1617 + AA2486 / AA4769$371.882026-10-29T01:02:54Z
2026-12-21 → 2026-12-22American AirlinesAA2612 + AA1713 / AA4769$371.882026-10-29T01:02:54Z

2026-12-21 → 2026-12-22 · $362.50

  • Southwest Airlines WN754: DCA 2026-12-21 14:40:00 → STL 2026-12-21 16:05:00; nonstop; 145 minutes. Local airport times.
  • Southwest Airlines WN1614: STL 2026-12-22 08:40:00 → DCA 2026-12-22 11:35:00; nonstop; 115 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $387.50

  • American Airlines AA4664: DCA 2026-12-21 19:59:00 → STL 2026-12-21 21:41:00; nonstop; 162 minutes. Local airport times.
  • American Airlines AA4769: STL 2026-12-22 15:51:00 → DCA 2026-12-22 18:54:00; nonstop; 123 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $368.76

  • United Airlines UA1793 / UA3556: DCA 2026-12-21 06:30:00 → STL 2026-12-21 10:42:00; 1 stop(s) via ORD; 312 minutes. Local airport times.
    • UA1793: DCA 2026-12-21 06:30:00 → ORD 2026-12-21 07:52:00; layover at ORD: 68 minutes.
    • UA3556: ORD 2026-12-21 09:00:00 → STL 2026-12-21 10:42:00.
  • United Airlines UA1344 / UA4172: STL 2026-12-22 06:00:00 → DCA 2026-12-22 12:29:00; 1 stop(s) via EWR; 329 minutes. Local airport times.
    • UA1344: STL 2026-12-22 06:00:00 → EWR 2026-12-22 09:21:00; layover at EWR: 99 minutes.
    • UA4172: EWR 2026-12-22 11:00:00 → DCA 2026-12-22 12:29:00.

2026-12-21 → 2026-12-22 · $381.26

  • Delta Air Lines DL1558 / DL1371: DCA 2026-12-21 09:45:00 → STL 2026-12-21 13:30:00; 1 stop(s) via DTW; 285 minutes. Local airport times.
    • DL1558: DCA 2026-12-21 09:45:00 → DTW 2026-12-21 11:22:00; layover at DTW: 81 minutes.
    • DL1371: DTW 2026-12-21 12:43:00 → STL 2026-12-21 13:30:00.
  • Delta Air Lines DL2868 / DL1454: STL 2026-12-22 10:14:00 → DCA 2026-12-22 16:38:00; 1 stop(s) via DTW; 324 minutes. Local airport times.
    • DL2868: STL 2026-12-22 10:14:00 → DTW 2026-12-22 12:46:00; layover at DTW: 140 minutes.
    • DL1454: DTW 2026-12-22 15:06:00 → DCA 2026-12-22 16:38:00.

2026-12-21 → 2026-12-22 · $362.50

  • Southwest Airlines WN1545: DCA 2026-12-21 08:25:00 → STL 2026-12-21 09:55:00; nonstop; 150 minutes. Local airport times.
  • Southwest Airlines WN1614: STL 2026-12-22 08:40:00 → DCA 2026-12-22 11:35:00; nonstop; 115 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $387.50

  • American Airlines AA4458: DCA 2026-12-21 08:20:00 → STL 2026-12-21 10:08:00; nonstop; 168 minutes. Local airport times.
  • American Airlines AA4769: STL 2026-12-22 15:51:00 → DCA 2026-12-22 18:54:00; nonstop; 123 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $346.88

  • Southwest Airlines WN4901 / WN261: DCA 2026-12-21 16:40:00 → STL 2026-12-21 21:00:00; 1 stop(s) via ATL; 320 minutes. Local airport times.
    • WN4901: DCA 2026-12-21 16:40:00 → ATL 2026-12-21 18:35:00; layover at ATL: 100 minutes.
    • WN261: ATL 2026-12-21 20:15:00 → STL 2026-12-21 21:00:00.
  • Southwest Airlines WN1614: STL 2026-12-22 08:40:00 → DCA 2026-12-22 11:35:00; nonstop; 115 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $346.88

  • Southwest Airlines WN1514 / WN1472: DCA 2026-12-21 09:05:00 → STL 2026-12-21 13:40:00; 1 stop(s) via BNA; 335 minutes. Local airport times.
    • WN1514: DCA 2026-12-21 09:05:00 → BNA 2026-12-21 10:15:00; layover at BNA: 135 minutes.
    • WN1472: BNA 2026-12-21 12:30:00 → STL 2026-12-21 13:40:00.
  • Southwest Airlines WN1614: STL 2026-12-22 08:40:00 → DCA 2026-12-22 11:35:00; nonstop; 115 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $371.88

  • American Airlines AA1617 / AA2486: DCA 2026-12-21 06:17:00 → STL 2026-12-21 10:19:00; 1 stop(s) via CLT; 302 minutes. Local airport times.
    • AA1617: DCA 2026-12-21 06:17:00 → CLT 2026-12-21 07:58:00; layover at CLT: 77 minutes.
    • AA2486: CLT 2026-12-21 09:15:00 → STL 2026-12-21 10:19:00.
  • American Airlines AA4769: STL 2026-12-22 15:51:00 → DCA 2026-12-22 18:54:00; nonstop; 123 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $371.88

  • American Airlines AA2612 / AA1713: DCA 2026-12-21 11:46:00 → STL 2026-12-21 15:51:00; 1 stop(s) via ORD; 305 minutes. Local airport times.
    • AA2612: DCA 2026-12-21 11:46:00 → ORD 2026-12-21 13:08:00; layover at ORD: 81 minutes.
    • AA1713: ORD 2026-12-21 14:29:00 → STL 2026-12-21 15:51:00.
  • American Airlines AA4769: STL 2026-12-22 15:51:00 → DCA 2026-12-22 18:54:00; nonstop; 123 minutes. Local airport times.

More dates for this route