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Dulles → Denver

Dec 21, 2026 · return Dec 27, 2026

IAD → DEN1 adulteconomyRound trip

8 flight options · 2 airlines

Nonstop flights

Mon, Dec 21 – Sun, Dec 27

United Airlines
4:21 pmIAD
4h 4m
Nonstop
6:25 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
7:30 pmIAD
4h 3m
Nonstop
9:33 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Sun, Dec 27

Delta Air Lines
7:06 pmIAD
6h 43m
MSP · 1h 25m
11:49 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
8:15 amIAD
6h
CLE · 1h 7m
12:15 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
6:10 amIAD
6h 16m
ORD · 1h 8m
10:26 amDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
12:45 pmIAD
6h 18m
CMH · 1h 16m
5:03 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
12:40 pmIAD
6h 10m
IND · 1h 16m
4:50 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sun, Dec 27

United Airlines
12:35 pmIAD
6h 3m
DTW · 1h 4m
4:38 pmDEN
United Airlines
4:11 pmDEN
3h 13m
Nonstop
9:24 pmIAD

Round-trip total · 1 adult · Taxes included

Make this trip yours

IAD ⇄ DEN

Economy

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

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More dates

All dates for this routeNov 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)
2026-12-21 → 2026-12-27United AirlinesUA395 / UA421$519.762026-10-29T01:57:46Z
2026-12-21 → 2026-12-27Delta Air Lines / United AirlinesDL3783 + DL1278 / UA421$502.882026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA672 / UA421$519.762026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA609 + UA1302 / UA421$496.132026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA565 + UA2495 / UA421$496.132026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA4559 + UA1389 / UA421$496.132026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA3543 + UA377 / UA421$496.132026-10-29T01:57:46Z
2026-12-21 → 2026-12-27United AirlinesUA3504 + UA624 / UA421$496.132026-10-29T01:57:46Z

2026-12-21 → 2026-12-27 · $519.76

  • United Airlines UA395: IAD 2026-12-21 16:21:00 → DEN 2026-12-21 18:25:00; nonstop; 244 minutes. Local airport times.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $502.88

  • Delta Air Lines DL3783 / DL1278: IAD 2026-12-21 19:06:00 → DEN 2026-12-21 23:49:00; 1 stop(s) via MSP; 403 minutes. Local airport times.
    • DL3783: IAD 2026-12-21 19:06:00 → MSP 2026-12-21 21:04:00; layover at MSP: 85 minutes.
    • DL1278: MSP 2026-12-21 22:29:00 → DEN 2026-12-21 23:49:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $519.76

  • United Airlines UA672: IAD 2026-12-21 19:30:00 → DEN 2026-12-21 21:33:00; nonstop; 243 minutes. Local airport times.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $496.13

  • United Airlines UA609 / UA1302: IAD 2026-12-21 08:15:00 → DEN 2026-12-21 12:15:00; 1 stop(s) via CLE; 360 minutes. Local airport times.
    • UA609: IAD 2026-12-21 08:15:00 → CLE 2026-12-21 09:38:00; layover at CLE: 67 minutes.
    • UA1302: CLE 2026-12-21 10:45:00 → DEN 2026-12-21 12:15:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $496.13

  • United Airlines UA565 / UA2495: IAD 2026-12-21 06:10:00 → DEN 2026-12-21 10:26:00; 1 stop(s) via ORD; 376 minutes. Local airport times.
    • UA565: IAD 2026-12-21 06:10:00 → ORD 2026-12-21 07:32:00; layover at ORD: 68 minutes.
    • UA2495: ORD 2026-12-21 08:40:00 → DEN 2026-12-21 10:26:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $496.13

  • United Airlines UA4559 / UA1389: IAD 2026-12-21 12:45:00 → DEN 2026-12-21 17:03:00; 1 stop(s) via CMH; 378 minutes. Local airport times.
    • UA4559: IAD 2026-12-21 12:45:00 → CMH 2026-12-21 14:20:00; layover at CMH: 76 minutes.
    • UA1389: CMH 2026-12-21 15:36:00 → DEN 2026-12-21 17:03:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $496.13

  • United Airlines UA3543 / UA377: IAD 2026-12-21 12:40:00 → DEN 2026-12-21 16:50:00; 1 stop(s) via IND; 370 minutes. Local airport times.
    • UA3543: IAD 2026-12-21 12:40:00 → IND 2026-12-21 14:33:00; layover at IND: 76 minutes.
    • UA377: IND 2026-12-21 15:49:00 → DEN 2026-12-21 16:50:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

2026-12-21 → 2026-12-27 · $496.13

  • United Airlines UA3504 / UA624: IAD 2026-12-21 12:35:00 → DEN 2026-12-21 16:38:00; 1 stop(s) via DTW; 363 minutes. Local airport times.
    • UA3504: IAD 2026-12-21 12:35:00 → DTW 2026-12-21 14:19:00; layover at DTW: 64 minutes.
    • UA624: DTW 2026-12-21 15:23:00 → DEN 2026-12-21 16:38:00.
  • United Airlines UA421: DEN 2026-12-27 16:11:00 → IAD 2026-12-27 21:24:00; nonstop; 193 minutes. Local airport times.

More dates for this route