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

Dulles → Saint Louis

Jun 26, 2027 · return Jun 29, 2027

IAD → STL1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Sat, Jun 26 – Tue, Jun 29

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

Round-trip total · 1 adult · Taxes included

Sat, Jun 26 – Tue, Jun 29

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

One-stop flights

Sat, Jun 26 – Tue, Jun 29

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

Sat, Jun 26 – Tue, Jun 29

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

Sat, Jun 26 – Tue, Jun 29

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

Sat, Jun 26 – Tue, Jun 29

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

Sat, Jun 26 – Tue, Jun 29

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

Sat, Jun 26 – Tue, Jun 29

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 routeJun 25, 2027 → Jun 28, 2027Jun 27, 2027 → Jun 30, 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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

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

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-06-26 → 2027-06-29United AirlinesUA4527 / UA4406$380.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29American AirlinesAA5649 + AA2486 / AA2486 + AA5317$350.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29Delta Air LinesDL5618 + DL4715 / DL1571 + DL1695$370.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29Air Canada / United AirlinesAC8615 + AC8889 / UA4454$490.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29United AirlinesUA4527 / UA4454$380.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29United AirlinesUA1775 + UA2844 / UA4454$370.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29United AirlinesUA1359 + UA3571 / UA4454$370.002026-10-29T01:07:59Z
2027-06-26 → 2027-06-29Delta Air LinesDL1444 + DL1393 / DL1571 + DL1695$370.002026-10-29T01:07:59Z

2027-06-26 → 2027-06-29 · $380.00

  • United Airlines UA4527: IAD 2027-06-26 18:00:00 → STL 2027-06-26 19:35:00; nonstop; 155 minutes. Local airport times.
  • United Airlines UA4406: STL 2027-06-29 08:30:00 → IAD 2027-06-29 11:35:00; nonstop; 125 minutes. Local airport times.

2027-06-26 → 2027-06-29 · $350.00

  • American Airlines AA5649 / AA2486: IAD 2027-06-26 06:00:00 → STL 2027-06-26 10:19:00; 1 stop(s) via CLT; 319 minutes. Local airport times.
    • AA5649: IAD 2027-06-26 06:00:00 → CLT 2027-06-26 07:48:00; layover at CLT: 87 minutes.
    • AA2486: CLT 2027-06-26 09:15:00 → STL 2027-06-26 10:19:00.
  • American Airlines AA2486 / AA5317: STL 2027-06-29 12:54:00 → IAD 2027-06-29 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2027-06-29 12:54:00 → CLT 2027-06-29 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2027-06-29 17:57:00 → IAD 2027-06-29 19:33:00.

2027-06-26 → 2027-06-29 · $370.00

  • Delta Air Lines DL5618 / DL4715: IAD 2027-06-26 12:35:00 → STL 2027-06-26 17:06:00; 1 stop(s) via JFK; 331 minutes. Local airport times.
    • DL5618: IAD 2027-06-26 12:35:00 → JFK 2027-06-26 14:01:00; layover at JFK: 69 minutes.
    • DL4715: JFK 2027-06-26 15:10:00 → STL 2027-06-26 17:06:00.
  • Delta Air Lines DL1571 / DL1695: STL 2027-06-29 10:06:00 → IAD 2027-06-29 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2027-06-29 10:06:00 → ATL 2027-06-29 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2027-06-29 14:21:00 → IAD 2027-06-29 16:02:00.

2027-06-26 → 2027-06-29 · $490.00

  • Air Canada AC8615 / AC8889: IAD 2027-06-26 09:55:00 → STL 2027-06-26 15:26:00; 1 stop(s) via YYZ; 391 minutes. Local airport times.
    • AC8615: IAD 2027-06-26 09:55:00 → YYZ 2027-06-26 11:22:00; layover at YYZ: 168 minutes.
    • AC8889: YYZ 2027-06-26 14:10:00 → STL 2027-06-26 15:26:00.
  • United Airlines UA4454: STL 2027-06-29 13:17:00 → IAD 2027-06-29 16:22:00; nonstop; 125 minutes. Local airport times.

2027-06-26 → 2027-06-29 · $380.00

  • United Airlines UA4527: IAD 2027-06-26 17:55:00 → STL 2027-06-26 19:27:00; nonstop; 152 minutes. Local airport times.
  • United Airlines UA4454: STL 2027-06-29 13:17:00 → IAD 2027-06-29 16:22:00; nonstop; 125 minutes. Local airport times.

2027-06-26 → 2027-06-29 · $370.00

  • United Airlines UA1775 / UA2844: IAD 2027-06-26 08:23:00 → STL 2027-06-26 12:10:00; 1 stop(s) via ORD; 287 minutes. Local airport times.
    • UA1775: IAD 2027-06-26 08:23:00 → ORD 2027-06-26 09:45:00; layover at ORD: 60 minutes.
    • UA2844: ORD 2027-06-26 10:45:00 → STL 2027-06-26 12:10:00.
  • United Airlines UA4454: STL 2027-06-29 13:17:00 → IAD 2027-06-29 16:22:00; nonstop; 125 minutes. Local airport times.

2027-06-26 → 2027-06-29 · $370.00

  • United Airlines UA1359 / UA3571: IAD 2027-06-26 06:10:00 → STL 2027-06-26 11:04:00; 1 stop(s) via EWR; 354 minutes. Local airport times.
    • UA1359: IAD 2027-06-26 06:10:00 → EWR 2027-06-26 07:28:00; layover at EWR: 92 minutes.
    • UA3571: EWR 2027-06-26 09:00:00 → STL 2027-06-26 11:04:00.
  • United Airlines UA4454: STL 2027-06-29 13:17:00 → IAD 2027-06-29 16:22:00; nonstop; 125 minutes. Local airport times.

2027-06-26 → 2027-06-29 · $370.00

  • Delta Air Lines DL1444 / DL1393: IAD 2027-06-26 12:34:00 → STL 2027-06-26 18:01:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
    • DL1444: IAD 2027-06-26 12:34:00 → ATL 2027-06-26 14:31:00; layover at ATL: 169 minutes.
    • DL1393: ATL 2027-06-26 17:20:00 → STL 2027-06-26 18:01:00.
  • Delta Air Lines DL1571 / DL1695: STL 2027-06-29 10:06:00 → IAD 2027-06-29 16:02:00; 1 stop(s) via ATL; 296 minutes. Local airport times.
    • DL1571: STL 2027-06-29 10:06:00 → ATL 2027-06-29 12:36:00; layover at ATL: 105 minutes.
    • DL1695: ATL 2027-06-29 14:21:00 → IAD 2027-06-29 16:02:00.

Explore this route

For AI assistants

  • This page: Dulles (IAD) to Saint Louis (STL) · Jun 26, 2027 · return Jun 29, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
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