Travel with Axel,
get the best price.

Route overview: San Juan to Dulles (IAD) flight deals

San Juan → Dulles

Dec 13, 2026 · return Dec 23, 2026

SJU → IAD1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Wed, Dec 23

Frontier Airlines
8:53 amSJU
4h 17m
Nonstop
12:10 pmIAD
Frontier Airlines
1:05 pmIAD
3h 47m
Nonstop
5:52 pmSJU

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

Air Canada
2:25 pmSJU
8h 3m
YYZ · 1h 19m
9:28 pmIAD
United Airlines
8:22 amIAD
3h 53m
Nonstop
1:15 pmSJU

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

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

Sun, Dec 13 – Wed, Dec 23

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.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Frontier Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

Explore this route

All dates for this routeDec 12, 2026 → Dec 22, 2026Dec 14, 2026 → Dec 24, 2026Hotels in Washington, DC with Axel
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: San Juan to Dulles (IAD) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-13 → 2026-12-23Frontier AirlinesF91939 / F91940$276.002026-10-29T01:23:44Z
2026-12-13 → 2026-12-23United AirlinesUA2022 / UA2021$534.002026-10-29T01:23:44Z
2026-12-13 → 2026-12-23American AirlinesAA3324 + AA5543 / AA5249 + AA539$486.002026-10-29T01:23:44Z
2026-12-13 → 2026-12-23Air Canada / United AirlinesAC1719 + UA3466 / UA2021$579.002026-10-29T01:23:44Z
2026-12-13 → 2026-12-23United AirlinesUA2024 / UA2021$534.002026-10-29T01:23:44Z
2026-12-13 → 2026-12-23Frontier AirlinesF92541 + F92954 / F91940$288.502026-10-29T01:23:44Z
2026-12-13 → 2026-12-23Frontier AirlinesF92283 + F93732 / F91940$288.502026-10-29T01:23:44Z
2026-12-13 → 2026-12-23Frontier AirlinesF91823 + F94230 / F91940$288.502026-10-29T01:23:44Z
2026-12-13 → 2026-12-23United AirlinesUA1173 + UA2677 / UA2021$516.502026-10-29T01:23:44Z

2026-12-13 → 2026-12-23 · $276.00

  • Frontier Airlines F91939: SJU 2026-12-13 08:53:00 → IAD 2026-12-13 12:10:00; nonstop; 257 minutes. Local airport times.
  • Frontier Airlines F91940: IAD 2026-12-23 13:05:00 → SJU 2026-12-23 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $534.00

  • United Airlines UA2022: SJU 2026-12-13 08:05:00 → IAD 2026-12-13 11:09:00; nonstop; 244 minutes. Local airport times.
  • United Airlines UA2021: IAD 2026-12-23 08:22:00 → SJU 2026-12-23 13:15:00; nonstop; 233 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $486.00

  • American Airlines AA3324 / AA5543: SJU 2026-12-13 07:05:00 → IAD 2026-12-13 14:53:00; 1 stop(s) via CLT; 528 minutes. Local airport times.
    • AA3324: SJU 2026-12-13 07:05:00 → CLT 2026-12-13 10:05:00; layover at CLT: 197 minutes.
    • AA5543: CLT 2026-12-13 13:22:00 → IAD 2026-12-13 14:53:00.
  • American Airlines AA5249 / AA539: IAD 2026-12-23 09:11:00 → SJU 2026-12-23 17:47:00; 1 stop(s) via CLT; 456 minutes. Local airport times.
    • AA5249: IAD 2026-12-23 09:11:00 → CLT 2026-12-23 10:51:00; layover at CLT: 137 minutes.
    • AA539: CLT 2026-12-23 13:08:00 → SJU 2026-12-23 17:47:00.

2026-12-13 → 2026-12-23 · $579.00

  • Air Canada AC1719 / UA3466: SJU 2026-12-13 14:25:00 → IAD 2026-12-13 21:28:00; 1 stop(s) via YYZ; 483 minutes. Local airport times.
    • AC1719: SJU 2026-12-13 14:25:00 → YYZ 2026-12-13 18:25:00; layover at YYZ: 79 minutes.
    • UA3466: YYZ 2026-12-13 19:44:00 → IAD 2026-12-13 21:28:00.
  • United Airlines UA2021: IAD 2026-12-23 08:22:00 → SJU 2026-12-23 13:15:00; nonstop; 233 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $534.00

  • United Airlines UA2024: SJU 2026-12-13 17:50:00 → IAD 2026-12-13 20:56:00; nonstop; 246 minutes. Local airport times.
  • United Airlines UA2021: IAD 2026-12-23 08:22:00 → SJU 2026-12-23 13:15:00; nonstop; 233 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $288.50

  • Frontier Airlines F92541 / F92954: SJU 2026-12-13 05:35:00 → IAD 2026-12-13 13:00:00; 1 stop(s) via TPA; 505 minutes. Local airport times.
    • F92541: SJU 2026-12-13 05:35:00 → TPA 2026-12-13 07:54:00; layover at TPA: 163 minutes.
    • F92954: TPA 2026-12-13 10:37:00 → IAD 2026-12-13 13:00:00.
  • Frontier Airlines F91940: IAD 2026-12-23 13:05:00 → SJU 2026-12-23 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $288.50

  • Frontier Airlines F92283 / F93732: SJU 2026-12-13 13:57:00 → IAD 2026-12-13 20:54:00; 1 stop(s) via MIA; 477 minutes. Local airport times.
    • F92283: SJU 2026-12-13 13:57:00 → MIA 2026-12-13 15:58:00; layover at MIA: 134 minutes.
    • F93732: MIA 2026-12-13 18:12:00 → IAD 2026-12-13 20:54:00.
  • Frontier Airlines F91940: IAD 2026-12-23 13:05:00 → SJU 2026-12-23 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $288.50

  • Frontier Airlines F91823 / F94230: SJU 2026-12-13 03:55:00 → IAD 2026-12-13 10:21:00; 1 stop(s) via MCO; 446 minutes. Local airport times.
    • F91823: SJU 2026-12-13 03:55:00 → MCO 2026-12-13 06:00:00; layover at MCO: 120 minutes.
    • F94230: MCO 2026-12-13 08:00:00 → IAD 2026-12-13 10:21:00.
  • Frontier Airlines F91940: IAD 2026-12-23 13:05:00 → SJU 2026-12-23 17:52:00; nonstop; 227 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $516.50

  • United Airlines UA1173 / UA2677: SJU 2026-12-13 14:52:00 → IAD 2026-12-13 21:30:00; 1 stop(s) via EWR; 458 minutes. Local airport times.
    • UA1173: SJU 2026-12-13 14:52:00 → EWR 2026-12-13 18:10:00; layover at EWR: 121 minutes.
    • UA2677: EWR 2026-12-13 20:11:00 → IAD 2026-12-13 21:30:00.
  • United Airlines UA2021: IAD 2026-12-23 08:22:00 → SJU 2026-12-23 13:15:00; nonstop; 233 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: San Juan (SJU) to Dulles (IAD) · Dec 13, 2026 · return Dec 23, 2026: 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.
  • 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 San Juan 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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.