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

Dulles → Saint Louis

Dec 4, 2026 · return Dec 8, 2026

IAD → STL1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Fri, Dec 4 – Tue, Dec 8

United Airlines
5:55 pmIAD
2h 32m
Nonstop
7:27 pmSTL
United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

United Airlines
8:40 amIAD
2h 32m
Nonstop
10:12 amSTL
United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 4 – Tue, Dec 8

American Airlines
6:00 amIAD
5h 19m
CLT · 1h 27m
10:19 amSTL
American Airlines
12:54 pmSTL
5h 39m
CLT · 2h 15m
7:33 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Delta Air Lines
12:35 pmIAD
5h 31m
JFK · 1h 9m
5:06 pmSTL
Delta Air Lines
10:06 amSTL
4h 56m
ATL · 1h 45m
4:02 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Air Canada
9:55 amIAD
6h 31m
YYZ · 2h 48m
3:26 pmSTL
United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

United Airlines
6:10 amIAD
5h 54m
EWR · 1h 32m
11:04 amSTL
United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

United Airlines
8:23 amIAD
4h 47m
ORD · 1h
12:10 pmSTL
United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Delta Air Lines
12:34 pmIAD
6h 27m
ATL · 2h 49m
6:01 pmSTL
Delta Air Lines
10:06 amSTL
4h 56m
ATL · 1h 45m
4:02 pmIAD

Round-trip total · 1 adult · Taxes included

Make this trip yours

IAD ⇄ STL

Economy

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

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Explore this route

All dates for this routeDec 3, 2026 → Dec 7, 2026Dec 5, 2026 → Dec 9, 2026
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.

Live price for these dates: opening any fare on this page checks it live and shows the current bookable total for 1 adult. Check live prices for Dulles (IAD) to Saint Louis (STL), Dec 4, 2026 · return Dec 8, 2026

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

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-04 → 2026-12-08United AirlinesUA4527 / UA4454$340.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08American AirlinesAA5649 + AA2486 / AA2486 + AA5317$310.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08Delta Air LinesDL5618 + DL4715 / DL1571 + DL1695$330.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08Air Canada / United AirlinesAC8615 + AC8889 / UA4454$440.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08United AirlinesUA4427 / UA4454$340.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08United AirlinesUA1359 + UA3571 / UA4454$330.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08United AirlinesUA1775 + UA2844 / UA4454$330.002026-10-29T01:07:59Z
2026-12-04 → 2026-12-08Delta Air LinesDL1444 + DL1393 / DL1571 + DL1695$330.002026-10-29T01:07:59Z

2026-12-04 → 2026-12-08 · $340.00

  • United Airlines UA4527: IAD 2026-12-04 17:55:00 → STL 2026-12-04 19:27:00; nonstop; 152 minutes. Local airport times.
  • United Airlines UA4454: STL 2026-12-08 13:17:00 → IAD 2026-12-08 16:22:00; nonstop; 125 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $310.00

  • American Airlines AA5649 / AA2486: IAD 2026-12-04 06:00:00 → STL 2026-12-04 10:19:00; 1 stop(s) via CLT; 319 minutes. Local airport times.
    • AA5649: IAD 2026-12-04 06:00:00 → CLT 2026-12-04 07:48:00; layover at CLT: 87 minutes.
    • AA2486: CLT 2026-12-04 09:15:00 → STL 2026-12-04 10:19:00.
  • American Airlines AA2486 / AA5317: STL 2026-12-08 12:54:00 → IAD 2026-12-08 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2026-12-08 12:54:00 → CLT 2026-12-08 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2026-12-08 17:57:00 → IAD 2026-12-08 19:33:00.

2026-12-04 → 2026-12-08 · $330.00

  • Delta Air Lines DL5618 / DL4715: IAD 2026-12-04 12:35:00 → STL 2026-12-04 17:06:00; 1 stop(s) via JFK; 331 minutes. Local airport times.
    • DL5618: IAD 2026-12-04 12:35:00 → JFK 2026-12-04 14:01:00; layover at JFK: 69 minutes.
    • DL4715: JFK 2026-12-04 15:10:00 → STL 2026-12-04 17:06:00.
  • Delta Air Lines DL1571 / DL1695: STL 2026-12-08 10:06:00 → IAD 2026-12-08 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2026-12-08 10:06:00 → ATL 2026-12-08 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2026-12-08 14:21:00 → IAD 2026-12-08 16:02:00.

2026-12-04 → 2026-12-08 · $440.00

  • Air Canada AC8615 / AC8889: IAD 2026-12-04 09:55:00 → STL 2026-12-04 15:26:00; 1 stop(s) via YYZ; 391 minutes. Local airport times.
    • AC8615: IAD 2026-12-04 09:55:00 → YYZ 2026-12-04 11:22:00; layover at YYZ: 168 minutes.
    • AC8889: YYZ 2026-12-04 14:10:00 → STL 2026-12-04 15:26:00.
  • United Airlines UA4454: STL 2026-12-08 13:17:00 → IAD 2026-12-08 16:22:00; nonstop; 125 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $340.00

  • United Airlines UA4427: IAD 2026-12-04 08:40:00 → STL 2026-12-04 10:12:00; nonstop; 152 minutes. Local airport times.
  • United Airlines UA4454: STL 2026-12-08 13:17:00 → IAD 2026-12-08 16:22:00; nonstop; 125 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $330.00

  • United Airlines UA1359 / UA3571: IAD 2026-12-04 06:10:00 → STL 2026-12-04 11:04:00; 1 stop(s) via EWR; 354 minutes. Local airport times.
    • UA1359: IAD 2026-12-04 06:10:00 → EWR 2026-12-04 07:28:00; layover at EWR: 92 minutes.
    • UA3571: EWR 2026-12-04 09:00:00 → STL 2026-12-04 11:04:00.
  • United Airlines UA4454: STL 2026-12-08 13:17:00 → IAD 2026-12-08 16:22:00; nonstop; 125 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $330.00

  • United Airlines UA1775 / UA2844: IAD 2026-12-04 08:23:00 → STL 2026-12-04 12:10:00; 1 stop(s) via ORD; 287 minutes. Local airport times.
    • UA1775: IAD 2026-12-04 08:23:00 → ORD 2026-12-04 09:45:00; layover at ORD: 60 minutes.
    • UA2844: ORD 2026-12-04 10:45:00 → STL 2026-12-04 12:10:00.
  • United Airlines UA4454: STL 2026-12-08 13:17:00 → IAD 2026-12-08 16:22:00; nonstop; 125 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $330.00

  • Delta Air Lines DL1444 / DL1393: IAD 2026-12-04 12:34:00 → STL 2026-12-04 18:01:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
    • DL1444: IAD 2026-12-04 12:34:00 → ATL 2026-12-04 14:31:00; layover at ATL: 169 minutes.
    • DL1393: ATL 2026-12-04 17:20:00 → STL 2026-12-04 18:01:00.
  • Delta Air Lines DL1571 / DL1695: STL 2026-12-08 10:06:00 → IAD 2026-12-08 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2026-12-08 10:06:00 → ATL 2026-12-08 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2026-12-08 14:21:00 → IAD 2026-12-08 16:02:00.

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