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San Juan → Dulles

Dec 21, 2026 · return Jan 4, 2027

SJU → IAD1 adulteconomyRound trip

9 flight options · 3 airlines

Nonstop flights

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
8:28 amSJU
4h 3m
Nonstop
11:31 amIAD
Frontier Airlines
1:05 pmIAD
3h 47m
Nonstop
5:52 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

United Airlines
8:05 amSJU
4h 4m
Nonstop
11:09 amIAD
United Airlines
8:22 amIAD
3h 53m
Nonstop
1:15 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

United Airlines
5:50 pmSJU
4h 6m
Nonstop
8:56 pmIAD
United Airlines
8:22 amIAD
3h 53m
Nonstop
1:15 pmSJU

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Mon, Jan 4

American Airlines
7:05 amSJU
8h 48m
CLT · 3h 17m
2:53 pmIAD
American Airlines
9:11 amIAD
7h 36m
CLT · 2h 17m
5:47 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
1:57 pmSJU
7h 57m
MIA · 2h 14m
8:54 pmIAD
Frontier Airlines
1:05 pmIAD
3h 47m
Nonstop
5:52 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
3:55 amSJU
7h 26m
MCO · 2h
10:21 amIAD
Frontier Airlines
1:05 pmIAD
3h 47m
Nonstop
5:52 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
5:35 amSJU
8h 25m
TPA · 2h 43m
1:00 pmIAD
Frontier Airlines
1:05 pmIAD
3h 47m
Nonstop
5:52 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

Frontier Airlines
8:53 amSJU
4h 17m
Nonstop
12:10 pmIAD
Frontier Airlines
3:41 pmIAD
6h 50m
FLL · 1h 19m
11:31 pmSJU

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Mon, Jan 4

United Airlines
2:52 pmSJU
7h 38m
EWR · 2h 1m
9:30 pmIAD
United Airlines
8:22 amIAD
3h 53m
Nonstop
1:15 pmSJU

Round-trip total · 1 adult · Taxes included

Make this trip yours

SJU ⇄ IAD

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 routeOct 30, 2026 → Nov 2, 2026Oct 31, 2026 → Nov 7, 2026Nov 13, 2026 → Nov 16, 2026Nov 14, 2026 → Nov 21, 2026Nov 27, 2026 → Nov 30, 2026Nov 28, 2026 → Dec 5, 2026Dec 11, 2026 → Dec 14, 2026Dec 12, 2026 → Dec 19, 2026Dec 25, 2026 → Dec 28, 2026Dec 26, 2026 → Jan 2, 2027Jan 8, 2027 → Jan 11, 2027Jan 9, 2027 → Jan 16, 2027Jan 22, 2027 → Jan 25, 2027Jan 23, 2027 → Jan 30, 2027Feb 5, 2027 → Feb 8, 2027Feb 6, 2027 → Feb 13, 2027Mar 5, 2027 → Mar 8, 2027Mar 6, 2027 → Mar 13, 2027Apr 2, 2027 → Apr 5, 2027Apr 3, 2027 → Apr 10, 2027Apr 30, 2027 → May 3, 2027May 1, 2027 → May 8, 2027May 28, 2027 → May 31, 2027May 29, 2027 → Jun 5, 2027Jun 25, 2027 → Jun 28, 2027Jun 26, 2027 → Jul 3, 2027Jul 23, 2027 → Jul 26, 2027Jul 24, 2027 → Jul 31, 2027Aug 20, 2027 → Aug 23, 2027Aug 21, 2027 → Aug 28, 2027Sep 17, 2027 → Sep 20, 2027Oct 30, 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 → 2027-01-04Frontier AirlinesF91939 / F91940$327.752026-10-29T01:23:44Z
2026-12-21 → 2027-01-04United AirlinesUA2022 / UA2021$634.132026-10-29T01:23:44Z
2026-12-21 → 2027-01-04American AirlinesAA3324 + AA5543 / AA5249 + AA539$577.132026-10-29T01:23:44Z
2026-12-21 → 2027-01-04United AirlinesUA2024 / UA2021$634.132026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF92283 + F93732 / F91940$345.252026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF91823 + F94230 / F91940$345.252026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF92541 + F92954 / F91940$345.252026-10-29T01:23:44Z
2026-12-21 → 2027-01-04Frontier AirlinesF91939 / F92959 + F94916$345.882026-10-29T01:23:44Z
2026-12-21 → 2027-01-04United AirlinesUA1173 + UA2677 / UA2021$609.632026-10-29T01:23:44Z

2026-12-21 → 2027-01-04 · $327.75

  • Frontier Airlines F91939: SJU 2026-12-21 08:28:00 → IAD 2026-12-21 11:31:00; nonstop; 243 minutes. Local airport times.
  • Frontier Airlines F91940: IAD 2027-01-04 13:05:00 → SJU 2027-01-04 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $634.13

  • United Airlines UA2022: SJU 2026-12-21 08:05:00 → IAD 2026-12-21 11:09:00; nonstop; 244 minutes. Local airport times.
  • United Airlines UA2021: IAD 2027-01-04 08:22:00 → SJU 2027-01-04 13:15:00; nonstop; 233 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $577.13

  • American Airlines AA3324 / AA5543: SJU 2026-12-21 07:05:00 → IAD 2026-12-21 14:53:00; 1 stop(s) via CLT; 528 minutes. Local airport times.
    • AA3324: SJU 2026-12-21 07:05:00 → CLT 2026-12-21 10:05:00; layover at CLT: 197 minutes.
    • AA5543: CLT 2026-12-21 13:22:00 → IAD 2026-12-21 14:53:00.
  • American Airlines AA5249 / AA539: IAD 2027-01-04 09:11:00 → SJU 2027-01-04 17:47:00; 1 stop(s) via CLT; 456 minutes. Local airport times.
    • AA5249: IAD 2027-01-04 09:11:00 → CLT 2027-01-04 10:51:00; layover at CLT: 137 minutes.
    • AA539: CLT 2027-01-04 13:08:00 → SJU 2027-01-04 17:47:00.

2026-12-21 → 2027-01-04 · $634.13

  • United Airlines UA2024: SJU 2026-12-21 17:50:00 → IAD 2026-12-21 20:56:00; nonstop; 246 minutes. Local airport times.
  • United Airlines UA2021: IAD 2027-01-04 08:22:00 → SJU 2027-01-04 13:15:00; nonstop; 233 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $345.25

  • Frontier Airlines F92283 / F93732: SJU 2026-12-21 13:57:00 → IAD 2026-12-21 20:54:00; 1 stop(s) via MIA; 477 minutes. Local airport times.
    • F92283: SJU 2026-12-21 13:57:00 → MIA 2026-12-21 15:58:00; layover at MIA: 134 minutes.
    • F93732: MIA 2026-12-21 18:12:00 → IAD 2026-12-21 20:54:00.
  • Frontier Airlines F91940: IAD 2027-01-04 13:05:00 → SJU 2027-01-04 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $345.25

  • Frontier Airlines F91823 / F94230: SJU 2026-12-21 03:55:00 → IAD 2026-12-21 10:21:00; 1 stop(s) via MCO; 446 minutes. Local airport times.
    • F91823: SJU 2026-12-21 03:55:00 → MCO 2026-12-21 06:00:00; layover at MCO: 120 minutes.
    • F94230: MCO 2026-12-21 08:00:00 → IAD 2026-12-21 10:21:00.
  • Frontier Airlines F91940: IAD 2027-01-04 13:05:00 → SJU 2027-01-04 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $345.25

  • Frontier Airlines F92541 / F92954: SJU 2026-12-21 05:35:00 → IAD 2026-12-21 13:00:00; 1 stop(s) via TPA; 505 minutes. Local airport times.
    • F92541: SJU 2026-12-21 05:35:00 → TPA 2026-12-21 07:54:00; layover at TPA: 163 minutes.
    • F92954: TPA 2026-12-21 10:37:00 → IAD 2026-12-21 13:00:00.
  • Frontier Airlines F91940: IAD 2027-01-04 13:05:00 → SJU 2027-01-04 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-21 → 2027-01-04 · $345.88

  • Frontier Airlines F91939: SJU 2026-12-21 08:53:00 → IAD 2026-12-21 12:10:00; nonstop; 257 minutes. Local airport times.
  • Frontier Airlines F92959 / F94916: IAD 2027-01-04 15:41:00 → SJU 2027-01-04 23:31:00; 1 stop(s) via FLL; 410 minutes. Local airport times.
    • F92959: IAD 2027-01-04 15:41:00 → FLL 2027-01-04 18:32:00; layover at FLL: 79 minutes.
    • F94916: FLL 2027-01-04 19:51:00 → SJU 2027-01-04 23:31:00.

2026-12-21 → 2027-01-04 · $609.63

  • United Airlines UA1173 / UA2677: SJU 2026-12-21 14:52:00 → IAD 2026-12-21 21:30:00; 1 stop(s) via EWR; 458 minutes. Local airport times.
    • UA1173: SJU 2026-12-21 14:52:00 → EWR 2026-12-21 18:10:00; layover at EWR: 121 minutes.
    • UA2677: EWR 2026-12-21 20:11:00 → IAD 2026-12-21 21:30:00.
  • United Airlines UA2021: IAD 2027-01-04 08:22:00 → SJU 2027-01-04 13:15:00; nonstop; 233 minutes. Local airport times.

More dates for this route