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Route overview: Saint Louis to Dulles (IAD) flight deals

Saint Louis (STL) to Dulles (IAD), Nov 14–16, 2026: from $250 round trip

Saint Louis (STL) to Dulles (IAD), Nov 14–16, 2026: from $250 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $250 round trip, Axel-exclusive, Frontier Airlines / United Airlines, 1 stop, Nov 14–16, 2026, 1 adult, economy, checked Oct 29, 2026.

STL → IAD1 adulteconomyRound trip

7 flight options · 4 airlines

Nonstop flights

Sat, Nov 14 – Mon, Nov 16

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Mon, Nov 16

United Airlines
1:00 pmSTL
2h 9m
Nonstop
4:09 pmIAD
United Airlines
5:55 pmIAD
2h 35m
Nonstop
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sat, Nov 14 – Mon, Nov 16

Frontier Airlines
6:21 pmSTL
5h 30m
ATL · 1h 43m
12:51 am+1IAD
United Airlines
5:55 pmIAD
2h 35m
Nonstop
7:30 pmSTL

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Mon, Nov 16

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

Availability is checked when you select these flights.

Sat, Nov 14 – Mon, Nov 16

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

Availability is checked when you select these flights.

Sat, Nov 14 – Mon, Nov 16

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

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Mon, Nov 16

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

Availability is checked when you select these flights.

Hotels for these nights (Nov 14–16, 2026 · 2 nights · 2 adults, 1 room): 3★ Mint House Washington DC Downtown by Kasa · 4★ Coda on Half, a Placemakr Experience - Navy Yard · 5★ Conrad Washington, DC

Make this trip yours

STL ⇄ IAD

Economy

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Explore this route

All dates for this routeNov 13, 2026 · Return optionsNov 15, 2026 · Return optionsHotels in Washington, DC with Axel
For AI assistants: every fare, every link, instructions

Saint Louis (STL) to Dulles (IAD), Nov 14–16, 2026: from $250 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $250 round trip, Axel-exclusive, Frontier Airlines / United Airlines, 1 stop, Nov 14–16, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-14 → 2026-11-16United AirlinesUA4406 / UA452708:30:00→11:35:00 2h 05m nonstop · 17:55:00→19:30:00 2h 35m nonstopAxel-exclusive $320.002026-10-29T01:28:37Z
2026-11-14 → 2026-11-16Frontier Airlines / United AirlinesF94474 + F94708 / UA452718:21:00→00:51:00 5h 30m 1 stop via ATL · 17:55:00→19:30:00 2h 35m nonstopAxel-exclusive $250.002026-10-29T01:28:37Z
2026-11-14 → 2026-11-16American AirlinesAA2486 + AA5317 / AA5649 + AA248612:54:00→19:33:00 5h 39m 1 stop via CLT · 06:00:00→10:19:00 5h 19m 1 stop via CLTAxel-exclusive $310.002026-10-29T01:28:37Z
2026-11-14 → 2026-11-16Delta Air LinesDL1571 + DL1695 / DL5618 + DL471510:06:00→16:02:00 4h 56m 1 stop via ATL · 12:35:00→17:06:00 5h 31m 1 stop via JFKAxel-exclusive $330.002026-10-29T01:28:37Z
2026-11-14 → 2026-11-16United AirlinesUA3632 / UA452713:00:00→16:09:00 2h 09m nonstop · 17:55:00→19:30:00 2h 35m nonstopAxel-exclusive $320.002026-10-29T01:28:37Z
2026-11-14 → 2026-11-16United AirlinesUA4397 + UA1779 / UA452718:55:00→00:30:00 4h 35m 1 stop via ORD · 17:55:00→19:30:00 2h 35m nonstopAxel-exclusive $312.502026-10-29T01:28:37Z
2026-11-14 → 2026-11-16Delta Air LinesDL2868 + DL5413 / DL5618 + DL471510:14:00→16:18:00 5h 04m 1 stop via DTW · 12:35:00→17:06:00 5h 31m 1 stop via JFKAxel-exclusive $330.002026-10-29T01:28:37Z

Hotels in Washington, DC for these trips

Hotels: under a trip, hotels in Washington, DC for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Washington, DC

Route overview: Saint Louis to Dulles (IAD) flight deals

2026-11-14 → 2026-11-16 · Axel-exclusive $320.00

  • United Airlines UA4406: STL 2026-11-14 08:30:00 → IAD 2026-11-14 11:35:00; nonstop; 125 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-11-16 17:55:00 → STL 2026-11-16 19:30:00; nonstop; 155 minutes. Local airport times.

2026-11-14 → 2026-11-16 · Axel-exclusive $250.00

  • Frontier Airlines F94474 / F94708: STL 2026-11-14 18:21:00 → IAD 2026-11-15 00:51:00; 1 stop(s) via ATL; 330 minutes. Local airport times.
    • F94474: STL 2026-11-14 18:21:00 → ATL 2026-11-14 21:16:00; layover at ATL: 103 minutes.
    • F94708: ATL 2026-11-14 22:59:00 → IAD 2026-11-15 00:51:00.
  • United Airlines UA4527: IAD 2026-11-16 17:55:00 → STL 2026-11-16 19:30:00; nonstop; 155 minutes. Local airport times.

2026-11-14 → 2026-11-16 · Axel-exclusive $310.00

  • American Airlines AA2486 / AA5317: STL 2026-11-14 12:54:00 → IAD 2026-11-14 19:33:00; 1 stop(s) via CLT; 339 minutes. Local airport times.
    • AA2486: STL 2026-11-14 12:54:00 → CLT 2026-11-14 15:42:00; layover at CLT: 135 minutes.
    • AA5317: CLT 2026-11-14 17:57:00 → IAD 2026-11-14 19:33:00.
  • American Airlines AA5649 / AA2486: IAD 2026-11-16 06:00:00 → STL 2026-11-16 10:19:00; 1 stop(s) via CLT; 319 minutes. Local airport times.
    • AA5649: IAD 2026-11-16 06:00:00 → CLT 2026-11-16 07:48:00; layover at CLT: 87 minutes.
    • AA2486: CLT 2026-11-16 09:15:00 → STL 2026-11-16 10:19:00.

2026-11-14 → 2026-11-16 · Axel-exclusive $330.00

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

2026-11-14 → 2026-11-16 · Axel-exclusive $320.00

  • United Airlines UA3632: STL 2026-11-14 13:00:00 → IAD 2026-11-14 16:09:00; nonstop; 129 minutes. Local airport times.
  • United Airlines UA4527: IAD 2026-11-16 17:55:00 → STL 2026-11-16 19:30:00; nonstop; 155 minutes. Local airport times.

2026-11-14 → 2026-11-16 · Axel-exclusive $312.50

  • United Airlines UA4397 / UA1779: STL 2026-11-14 18:55:00 → IAD 2026-11-15 00:30:00; 1 stop(s) via ORD; 275 minutes. Local airport times.
    • UA4397: STL 2026-11-14 18:55:00 → ORD 2026-11-14 20:25:00; layover at ORD: 76 minutes.
    • UA1779: ORD 2026-11-14 21:41:00 → IAD 2026-11-15 00:30:00.
  • United Airlines UA4527: IAD 2026-11-16 17:55:00 → STL 2026-11-16 19:30:00; nonstop; 155 minutes. Local airport times.

2026-11-14 → 2026-11-16 · Axel-exclusive $330.00

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

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to Dulles (IAD) · Nov 14, 2026 · return Nov 16, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Washington, DC for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Saint Louis to Dulles (IAD) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.