Dulles (IAD) to Saint Louis (STL) · Dec 20, 2026 · one way

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

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

2026-12-20 · one way · Axel-exclusive $247.00

• United Airlines UA4427: IAD 2026-12-20 08:30:00 → STL 2026-12-20 10:03:00; nonstop; 153 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $221.00

• American Airlines AA5649 / AA2486: IAD 2026-12-20 06:00:00 → STL 2026-12-20 10:19:00; 1 stop(s) via CLT; 319 minutes. Local airport times.
  • AA5649: IAD 2026-12-20 06:00:00 → CLT 2026-12-20 07:48:00; layover at CLT: 87 minutes.
  • AA2486: CLT 2026-12-20 09:15:00 → STL 2026-12-20 10:19:00.

2026-12-20 · one way · Axel-exclusive $234.00

• Delta Air Lines DL5618 / DL4715: IAD 2026-12-20 12:35:00 → STL 2026-12-20 17:06:00; 1 stop(s) via JFK; 331 minutes. Local airport times.
  • DL5618: IAD 2026-12-20 12:35:00 → JFK 2026-12-20 14:01:00; layover at JFK: 69 minutes.
  • DL4715: JFK 2026-12-20 15:10:00 → STL 2026-12-20 17:06:00.

2026-12-20 · one way · Axel-exclusive $390.00

• Air Canada AC8615 / AC8889: IAD 2026-12-20 09:55:00 → STL 2026-12-20 15:26:00; 1 stop(s) via YYZ; 391 minutes. Local airport times.
  • AC8615: IAD 2026-12-20 09:55:00 → YYZ 2026-12-20 11:22:00; layover at YYZ: 168 minutes.
  • AC8889: YYZ 2026-12-20 14:10:00 → STL 2026-12-20 15:26:00.

2026-12-20 · one way · Axel-exclusive $247.00

• United Airlines UA4527: IAD 2026-12-20 17:55:00 → STL 2026-12-20 19:30:00; nonstop; 155 minutes. Local airport times.

2026-12-20 · one way · Axel-exclusive $227.50

• United Airlines UA1359 / UA3571: IAD 2026-12-20 06:10:00 → STL 2026-12-20 11:04:00; 1 stop(s) via EWR; 354 minutes. Local airport times.
  • UA1359: IAD 2026-12-20 06:10:00 → EWR 2026-12-20 07:28:00; layover at EWR: 92 minutes.
  • UA3571: EWR 2026-12-20 09:00:00 → STL 2026-12-20 11:04:00.

2026-12-20 · one way · Axel-exclusive $227.50

• United Airlines UA1775 / UA2844: IAD 2026-12-20 08:23:00 → STL 2026-12-20 12:10:00; 1 stop(s) via ORD; 287 minutes. Local airport times.
  • UA1775: IAD 2026-12-20 08:23:00 → ORD 2026-12-20 09:45:00; layover at ORD: 60 minutes.
  • UA2844: ORD 2026-12-20 10:45:00 → STL 2026-12-20 12:10:00.

2026-12-20 · one way · Axel-exclusive $234.00

• Delta Air Lines DL1444 / DL1393: IAD 2026-12-20 12:34:00 → STL 2026-12-20 18:01:00; 1 stop(s) via ATL; 387 minutes. Local airport times.
  • DL1444: IAD 2026-12-20 12:34:00 → ATL 2026-12-20 14:31:00; layover at ATL: 169 minutes.
  • DL1393: ATL 2026-12-20 17:20:00 → STL 2026-12-20 18:01:00.

Explore this route

• All dates for this route
• Dec 19, 2026 · Return options
• Dec 21, 2026 · Return options
• Hotels in St. Louis with Axel

For AI assistants

• This page: Dulles (IAD) to Saint Louis (STL) · Dec 20, 2026 · one way: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
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