Travel with Axel,
get the best price.

Dulles → Austin

Dec 13, 2026 · return Dec 19, 2026

IAD → AUS1 adulteconomyRound trip

8 flight options · 4 airlines

Nonstop flights

Sun, Dec 13 – Sat, Dec 19

United Airlines
8:30 amIAD
3h 49m
Nonstop
11:19 amAUS
United Airlines
5:00 pmAUS
3h 22m
Nonstop
9:22 pmIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

United Airlines
6:00 pmIAD
3h 50m
Nonstop
8:50 pmAUS
United Airlines
5:00 pmAUS
3h 22m
Nonstop
9:22 pmIAD

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Sat, Dec 19

Frontier Airlines
11:16 amIAD
6h 39m
MCO · 1h 4m
4:55 pmAUS
Frontier Airlines
11:10 amAUS
5h 28m
ATL · 1h 12m
5:38 pmIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

American Airlines
5:50 pmIAD
6h 11m
DFW · 1h 24m
11:01 pmAUS
American Airlines
8:09 amAUS
5h 44m
CLT · 1h 30m
2:53 pmIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

Delta Air Lines
12:34 pmIAD
6h 5m
ATL · 1h 34m
5:39 pmAUS
Delta Air Lines
5:10 amAUS
5h 46m
DTW · 1h 10m
11:56 amIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

United Airlines
6:00 pmIAD
3h 57m
Nonstop
8:57 pmAUS
United Airlines
7:30 amAUS
7h 14m
DEN · 1h 27m
3:44 pmIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

United Airlines
6:00 amIAD
6h 13m
IAH · 1h 26m
11:13 amAUS
United Airlines
5:00 pmAUS
3h 22m
Nonstop
9:22 pmIAD

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Sat, Dec 19

United Airlines
6:10 amIAD
6h 52m
ORD · 1h 25m
12:02 pmAUS
United Airlines
5:00 pmAUS
3h 22m
Nonstop
9:22 pmIAD

Round-trip total · 1 adult · Taxes included

Make this trip yours

IAD ⇄ AUS

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, United 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

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)
2026-12-13 → 2026-12-19United AirlinesUA637 / UA3450$460.002026-10-29T01:05:49Z
2026-12-13 → 2026-12-19Frontier AirlinesF94355 + F94523 / F94702 + F93692$230.002026-10-29T01:05:49Z
2026-12-13 → 2026-12-19American AirlinesAA2414 + AA2707 / AA2989 + AA5543$402.502026-10-29T01:05:49Z
2026-12-13 → 2026-12-19Delta Air LinesDL1444 + DL1491 / DL1040 + DL5517$431.252026-10-29T01:05:49Z
2026-12-13 → 2026-12-19United AirlinesUA2337 / UA3450$460.002026-10-29T01:05:49Z
2026-12-13 → 2026-12-19United AirlinesUA2337 / UA476 + UA2087$434.002026-10-29T01:05:49Z
2026-12-13 → 2026-12-19United AirlinesUA451 + UA1823 / UA3450$440.002026-10-29T01:05:49Z
2026-12-13 → 2026-12-19United AirlinesUA565 + UA1688 / UA3450$440.002026-10-29T01:05:49Z

2026-12-13 → 2026-12-19 · $460.00

  • United Airlines UA637: IAD 2026-12-13 08:30:00 → AUS 2026-12-13 11:19:00; nonstop; 229 minutes. Local airport times.
  • United Airlines UA3450: AUS 2026-12-19 17:00:00 → IAD 2026-12-19 21:22:00; nonstop; 202 minutes. Local airport times.

2026-12-13 → 2026-12-19 · $230.00

  • Frontier Airlines F94355 / F94523: IAD 2026-12-13 11:16:00 → AUS 2026-12-13 16:55:00; 1 stop(s) via MCO; 399 minutes. Local airport times.
    • F94355: IAD 2026-12-13 11:16:00 → MCO 2026-12-13 13:49:00; layover at MCO: 64 minutes.
    • F94523: MCO 2026-12-13 14:53:00 → AUS 2026-12-13 16:55:00.
  • Frontier Airlines F94702 / F93692: AUS 2026-12-19 11:10:00 → IAD 2026-12-19 17:38:00; 1 stop(s) via ATL; 328 minutes. Local airport times.
    • F94702: AUS 2026-12-19 11:10:00 → ATL 2026-12-19 14:32:00; layover at ATL: 72 minutes.
    • F93692: ATL 2026-12-19 15:44:00 → IAD 2026-12-19 17:38:00.

2026-12-13 → 2026-12-19 · $402.50

  • American Airlines AA2414 / AA2707: IAD 2026-12-13 17:50:00 → AUS 2026-12-13 23:01:00; 1 stop(s) via DFW; 371 minutes. Local airport times.
    • AA2414: IAD 2026-12-13 17:50:00 → DFW 2026-12-13 20:30:00; layover at DFW: 84 minutes.
    • AA2707: DFW 2026-12-13 21:54:00 → AUS 2026-12-13 23:01:00.
  • American Airlines AA2989 / AA5543: AUS 2026-12-19 08:09:00 → IAD 2026-12-19 14:53:00; 1 stop(s) via CLT; 344 minutes. Local airport times.
    • AA2989: AUS 2026-12-19 08:09:00 → CLT 2026-12-19 11:52:00; layover at CLT: 90 minutes.
    • AA5543: CLT 2026-12-19 13:22:00 → IAD 2026-12-19 14:53:00.

2026-12-13 → 2026-12-19 · $431.25

  • Delta Air Lines DL1444 / DL1491: IAD 2026-12-13 12:34:00 → AUS 2026-12-13 17:39:00; 1 stop(s) via ATL; 365 minutes. Local airport times.
    • DL1444: IAD 2026-12-13 12:34:00 → ATL 2026-12-13 14:31:00; layover at ATL: 94 minutes.
    • DL1491: ATL 2026-12-13 16:05:00 → AUS 2026-12-13 17:39:00.
  • Delta Air Lines DL1040 / DL5517: AUS 2026-12-19 05:10:00 → IAD 2026-12-19 11:56:00; 1 stop(s) via DTW; 346 minutes. Local airport times.
    • DL1040: AUS 2026-12-19 05:10:00 → DTW 2026-12-19 09:05:00; layover at DTW: 70 minutes.
    • DL5517: DTW 2026-12-19 10:15:00 → IAD 2026-12-19 11:56:00.

2026-12-13 → 2026-12-19 · $460.00

  • United Airlines UA2337: IAD 2026-12-13 18:00:00 → AUS 2026-12-13 20:50:00; nonstop; 230 minutes. Local airport times.
  • United Airlines UA3450: AUS 2026-12-19 17:00:00 → IAD 2026-12-19 21:22:00; nonstop; 202 minutes. Local airport times.

2026-12-13 → 2026-12-19 · $434.00

  • United Airlines UA2337: IAD 2026-12-13 18:00:00 → AUS 2026-12-13 20:57:00; nonstop; 237 minutes. Local airport times.
  • United Airlines UA476 / UA2087: AUS 2026-12-19 07:30:00 → IAD 2026-12-19 15:44:00; 1 stop(s) via DEN; 434 minutes. Local airport times.
    • UA476: AUS 2026-12-19 07:30:00 → DEN 2026-12-19 08:53:00; layover at DEN: 87 minutes.
    • UA2087: DEN 2026-12-19 10:20:00 → IAD 2026-12-19 15:44:00.

2026-12-13 → 2026-12-19 · $440.00

  • United Airlines UA451 / UA1823: IAD 2026-12-13 06:00:00 → AUS 2026-12-13 11:13:00; 1 stop(s) via IAH; 373 minutes. Local airport times.
    • UA451: IAD 2026-12-13 06:00:00 → IAH 2026-12-13 08:36:00; layover at IAH: 86 minutes.
    • UA1823: IAH 2026-12-13 10:02:00 → AUS 2026-12-13 11:13:00.
  • United Airlines UA3450: AUS 2026-12-19 17:00:00 → IAD 2026-12-19 21:22:00; nonstop; 202 minutes. Local airport times.

2026-12-13 → 2026-12-19 · $440.00

  • United Airlines UA565 / UA1688: IAD 2026-12-13 06:10:00 → AUS 2026-12-13 12:02:00; 1 stop(s) via ORD; 412 minutes. Local airport times.
    • UA565: IAD 2026-12-13 06:10:00 → ORD 2026-12-13 07:32:00; layover at ORD: 85 minutes.
    • UA1688: ORD 2026-12-13 08:57:00 → AUS 2026-12-13 12:02:00.
  • United Airlines UA3450: AUS 2026-12-19 17:00:00 → IAD 2026-12-19 21:22:00; nonstop; 202 minutes. Local airport times.

More dates for this route