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Saint Louis → Dulles

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STL → IAD1 adulteconomy

21 flight options · 4 airlines

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD
United Airlines
6:00 pmIAD
2h 35m
Nonstop
7:35 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Frontier Airlines
6:21 pmSTL
5h 30m
ATL · 1h 43m
12:51 am+1IAD
United Airlines
6:00 pmIAD
2h 35m
Nonstop
7:35 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

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

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

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

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

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

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

United Airlines
8:30 amSTL
2h 5m
Nonstop
11:35 amIAD
United Airlines
6:00 pmIAD
2h 35m
Nonstop
7:35 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
8:30 amSTL
2h 5m
Nonstop
11:35 amIAD
United Airlines
5:55 pmIAD
2h 32m
Nonstop
7:27 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Frontier Airlines
6:21 pmSTL
5h 30m
ATL · 1h 43m
12:51 am+1IAD
United Airlines
5:55 pmIAD
2h 32m
Nonstop
7:27 pmSTL

Round-trip total · 1 adult · Taxes included

Show 6 more flights

Fri, Nov 20 – Mon, Nov 23

United Airlines
6:55 pmSTL
4h 35m
ORD · 1h 16m
12:30 am+1IAD
United Airlines
6:00 pmIAD
2h 35m
Nonstop
7:35 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
10:14 amSTL
5h 4m
DTW · 1h 59m
4:18 pmIAD
Delta Air Lines
12:35 pmIAD
5h 31m
JFK · 1h 9m
5:06 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

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

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
6:55 pmSTL
4h 35m
ORD · 1h 16m
12:30 am+1IAD
United Airlines
5:55 pmIAD
2h 32m
Nonstop
7:27 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

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

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
10:14 amSTL
5h 4m
DTW · 1h 59m
4:18 pmIAD
Delta Air Lines
12:35 pmIAD
5h 31m
JFK · 1h 9m
5:06 pmSTL

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

United Airlines
1:17 pmSTL
2h 5m
Nonstop
4:22 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Frontier Airlines
6:21 pmSTL
5h 30m
ATL · 1h 43m
12:51 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

American Airlines
12:54 pmSTL
5h 39m
CLT · 2h 15m
7:33 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
10:06 amSTL
4h 56m
ATL · 1h 45m
4:02 pmIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
8:30 amSTL
2h 5m
Nonstop
11:35 amIAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
6:55 pmSTL
4h 35m
ORD · 1h 16m
12:30 am+1IAD

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
10:14 amSTL
5h 4m
DTW · 1h 59m
4:18 pmIAD

One-way total · 1 adult · Taxes included

Make this trip yours

STL ⇄ IAD

Economy

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

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  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
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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

More dates

Nov 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)
2026-11-20 · one wayUnited AirlinesUA4454$170.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23United AirlinesUA4454 / UA4527$320.002026-10-29T01:28:37Z
2026-11-20 · one wayFrontier AirlinesF94474 + F94708$95.002026-10-29T01:28:37Z
2026-11-20 · one wayAmerican AirlinesAA2486 + AA5317$160.002026-10-29T01:28:37Z
2026-11-20 · one wayDelta Air LinesDL1571 + DL1695$175.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23Frontier Airlines / United AirlinesF94474 + F94708 / UA4527$250.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23American AirlinesAA2486 + AA5317 / AA5649 + AA2486$310.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23Delta Air LinesDL1571 + DL1695 / DL5618 + DL4715$330.002026-10-29T01:28:37Z
2026-11-27 → 2026-12-04United AirlinesUA4454 / UA4527$368.002026-10-29T01:28:37Z
2026-11-20 · one wayUnited AirlinesUA4406$170.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23United AirlinesUA4406 / UA4527$320.002026-10-29T01:28:37Z
2026-11-27 → 2026-12-04United AirlinesUA4406 / UA4527$368.002026-10-29T01:28:37Z
2026-11-20 · one wayUnited AirlinesUA4397 + UA1779$160.002026-10-29T01:28:37Z
2026-11-20 · one wayDelta Air LinesDL2868 + DL5413$175.002026-10-29T01:28:37Z
2026-11-27 → 2026-12-04Frontier Airlines / United AirlinesF94474 + F94708 / UA4527$277.002026-10-29T01:28:37Z
2026-11-20 → 2026-11-23United AirlinesUA4397 + UA1779 / UA4527$312.502026-10-29T01:28:37Z
2026-11-20 → 2026-11-23Delta Air LinesDL2868 + DL5413 / DL5618 + DL4715$330.002026-10-29T01:28:37Z
2026-11-27 → 2026-12-04American AirlinesAA2486 + AA5317 / AA5649 + AA2486$356.502026-10-29T01:28:37Z
2026-11-27 → 2026-12-04United AirlinesUA4397 + UA1779 / UA4527$358.252026-10-29T01:28:37Z
2026-11-27 → 2026-12-04Delta Air LinesDL1571 + DL1695 / DL5618 + DL4715$379.502026-10-29T01:28:37Z
2026-11-27 → 2026-12-04Delta Air LinesDL2868 + DL5413 / DL5618 + DL4715$379.502026-10-29T01:28:37Z

2026-11-20 · one way · $170.00

  • United Airlines UA4454: STL 2026-11-20 13:17:00 → IAD 2026-11-20 16:22:00; nonstop; 125 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $320.00

  • United Airlines UA4454: STL 2026-11-20 13:17:00 → IAD 2026-11-20 16:22:00; nonstop; 125 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-11-23 18:00:00 → STL 2026-11-23 19:35:00; nonstop; 155 minutes. Local airport times.

2026-11-20 · one way · $95.00

  • Frontier Airlines F94474 / F94708: STL 2026-11-20 18:21:00 → IAD 2026-11-21 00:51:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-11-20 18:21:00 → ATL 2026-11-20 21:16:00; layover at ATL: 103 minutes.
    • F94708: ATL 2026-11-20 22:59:00 → IAD 2026-11-21 00:51:00.

2026-11-20 · one way · $160.00

  • American Airlines AA2486 / AA5317: STL 2026-11-20 12:54:00 → IAD 2026-11-20 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2026-11-20 12:54:00 → CLT 2026-11-20 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2026-11-20 17:57:00 → IAD 2026-11-20 19:33:00.

2026-11-20 · one way · $175.00

  • Delta Air Lines DL1571 / DL1695: STL 2026-11-20 10:06:00 → IAD 2026-11-20 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2026-11-20 10:06:00 → ATL 2026-11-20 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2026-11-20 14:21:00 → IAD 2026-11-20 16:02:00.

2026-11-20 → 2026-11-23 · $250.00

  • Frontier Airlines F94474 / F94708: STL 2026-11-20 18:21:00 → IAD 2026-11-21 00:51:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-11-20 18:21:00 → ATL 2026-11-20 21:16:00; layover at ATL: 103 minutes.
    • F94708: ATL 2026-11-20 22:59:00 → IAD 2026-11-21 00:51:00.
  • United Airlines UA4527: IAD 2026-11-23 18:00:00 → STL 2026-11-23 19:35:00; nonstop; 155 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $310.00

  • American Airlines AA2486 / AA5317: STL 2026-11-20 12:54:00 → IAD 2026-11-20 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2026-11-20 12:54:00 → CLT 2026-11-20 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2026-11-20 17:57:00 → IAD 2026-11-20 19:33:00.
  • American Airlines AA5649 / AA2486: IAD 2026-11-23 06:00:00 → STL 2026-11-23 10:19:00; 1 stop(s) via CLT; 319 minutes. Local airport times.
    • AA5649: IAD 2026-11-23 06:00:00 → CLT 2026-11-23 07:48:00; layover at CLT: 87 minutes.
    • AA2486: CLT 2026-11-23 09:15:00 → STL 2026-11-23 10:19:00.

2026-11-20 → 2026-11-23 · $330.00

  • Delta Air Lines DL1571 / DL1695: STL 2026-11-20 10:06:00 → IAD 2026-11-20 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2026-11-20 10:06:00 → ATL 2026-11-20 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2026-11-20 14:21:00 → IAD 2026-11-20 16:02:00.
  • Delta Air Lines DL5618 / DL4715: IAD 2026-11-23 12:35:00 → STL 2026-11-23 17:06:00; 1 stop(s) via JFK; 331 minutes. Local airport times.
    • DL5618: IAD 2026-11-23 12:35:00 → JFK 2026-11-23 14:01:00; layover at JFK: 69 minutes.
    • DL4715: JFK 2026-11-23 15:10:00 → STL 2026-11-23 17:06:00.

2026-11-27 → 2026-12-04 · $368.00

  • United Airlines UA4454: STL 2026-11-27 13:17:00 → IAD 2026-11-27 16:22:00; nonstop; 125 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-12-04 17:55:00 → STL 2026-12-04 19:27:00; nonstop; 152 minutes. Local airport times.

2026-11-20 · one way · $170.00

  • United Airlines UA4406: STL 2026-11-20 08:30:00 → IAD 2026-11-20 11:35:00; nonstop; 125 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $320.00

  • United Airlines UA4406: STL 2026-11-20 08:30:00 → IAD 2026-11-20 11:35:00; nonstop; 125 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-11-23 18:00:00 → STL 2026-11-23 19:35:00; nonstop; 155 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $368.00

  • United Airlines UA4406: STL 2026-11-27 08:30:00 → IAD 2026-11-27 11:35:00; nonstop; 125 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-12-04 17:55:00 → STL 2026-12-04 19:27:00; nonstop; 152 minutes. Local airport times.

2026-11-20 · one way · $160.00

  • United Airlines UA4397 / UA1779: STL 2026-11-20 18:55:00 → IAD 2026-11-21 00:30:00; 1 stop(s) via ORD; 275 minutes. Local airport times.
    • UA4397: STL 2026-11-20 18:55:00 → ORD 2026-11-20 20:25:00; layover at ORD: 76 minutes.
    • UA1779: ORD 2026-11-20 21:41:00 → IAD 2026-11-21 00:30:00.

2026-11-20 · one way · $175.00

  • Delta Air Lines DL2868 / DL5413: STL 2026-11-20 10:14:00 → IAD 2026-11-20 16:18:00; 1 stop(s) via DTW; 304 minutes. Local airport times.
    • DL2868: STL 2026-11-20 10:14:00 → DTW 2026-11-20 12:46:00; layover at DTW: 119 minutes.
    • DL5413: DTW 2026-11-20 14:45:00 → IAD 2026-11-20 16:18:00.

2026-11-27 → 2026-12-04 · $277.00

  • Frontier Airlines F94474 / F94708: STL 2026-11-27 18:21:00 → IAD 2026-11-28 00:51:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-11-27 18:21:00 → ATL 2026-11-27 21:16:00; layover at ATL: 103 minutes.
    • F94708: ATL 2026-11-27 22:59:00 → IAD 2026-11-28 00:51:00.
  • United Airlines UA4527: IAD 2026-12-04 17:55:00 → STL 2026-12-04 19:27:00; nonstop; 152 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $312.50

  • United Airlines UA4397 / UA1779: STL 2026-11-20 18:55:00 → IAD 2026-11-21 00:30:00; 1 stop(s) via ORD; 275 minutes. Local airport times.
    • UA4397: STL 2026-11-20 18:55:00 → ORD 2026-11-20 20:25:00; layover at ORD: 76 minutes.
    • UA1779: ORD 2026-11-20 21:41:00 → IAD 2026-11-21 00:30:00.
  • United Airlines UA4527: IAD 2026-11-23 18:00:00 → STL 2026-11-23 19:35:00; nonstop; 155 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $330.00

  • Delta Air Lines DL2868 / DL5413: STL 2026-11-20 10:14:00 → IAD 2026-11-20 16:18:00; 1 stop(s) via DTW; 304 minutes. Local airport times.
    • DL2868: STL 2026-11-20 10:14:00 → DTW 2026-11-20 12:46:00; layover at DTW: 119 minutes.
    • DL5413: DTW 2026-11-20 14:45:00 → IAD 2026-11-20 16:18:00.
  • Delta Air Lines DL5618 / DL4715: IAD 2026-11-23 12:35:00 → STL 2026-11-23 17:06:00; 1 stop(s) via JFK; 331 minutes. Local airport times.
    • DL5618: IAD 2026-11-23 12:35:00 → JFK 2026-11-23 14:01:00; layover at JFK: 69 minutes.
    • DL4715: JFK 2026-11-23 15:10:00 → STL 2026-11-23 17:06:00.

2026-11-27 → 2026-12-04 · $356.50

  • American Airlines AA2486 / AA5317: STL 2026-11-27 12:54:00 → IAD 2026-11-27 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2026-11-27 12:54:00 → CLT 2026-11-27 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2026-11-27 17:57:00 → IAD 2026-11-27 19:33:00.
  • 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.

2026-11-27 → 2026-12-04 · $358.25

  • United Airlines UA4397 / UA1779: STL 2026-11-27 18:55:00 → IAD 2026-11-28 00:30:00; 1 stop(s) via ORD; 275 minutes. Local airport times.
    • UA4397: STL 2026-11-27 18:55:00 → ORD 2026-11-27 20:25:00; layover at ORD: 76 minutes.
    • UA1779: ORD 2026-11-27 21:41:00 → IAD 2026-11-28 00:30:00.
  • United Airlines UA4527: IAD 2026-12-04 17:55:00 → STL 2026-12-04 19:27:00; nonstop; 152 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $379.50

  • Delta Air Lines DL1571 / DL1695: STL 2026-11-27 10:06:00 → IAD 2026-11-27 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2026-11-27 10:06:00 → ATL 2026-11-27 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2026-11-27 14:21:00 → IAD 2026-11-27 16:02:00.
  • 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.

2026-11-27 → 2026-12-04 · $379.50

  • Delta Air Lines DL2868 / DL5413: STL 2026-11-27 10:14:00 → IAD 2026-11-27 16:18:00; 1 stop(s) via DTW; 304 minutes. Local airport times.
    • DL2868: STL 2026-11-27 10:14:00 → DTW 2026-11-27 12:46:00; layover at DTW: 119 minutes.
    • DL5413: DTW 2026-11-27 14:45:00 → IAD 2026-11-27 16:18:00.
  • 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.

More dates for this route