Dulles → Louisville
Dec 11, 2026 · return Dec 15, 2026
IAD → SDF1 adulteconomyRound trip
3 flight options · 3 airlines
Nonstop flights
One-stop flights
Make this trip yours
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 5, 2026 → Nov 8, 2026Nov 14, 2026 → Nov 21, 2026Nov 24, 2026 → Nov 29, 2026Dec 5, 2026 → Dec 12, 2026Dec 17, 2026 → Dec 20, 2026Dec 26, 2026 → Jan 2, 2027Jan 5, 2027 · One wayJan 16, 2027 → Jan 23, 2027Feb 5, 2027 → Feb 8, 2027Apr 3, 2027 → Apr 10, 2027Jun 26, 2027 → Jul 3, 2027Sep 17, 2027 → Sep 20, 2027
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 dates | Airline | Flights | Total price | Price issued (UTC) |
|---|---|---|---|---|
| 2026-12-11 → 2026-12-15 | United Airlines | UA4068 / UA4067 | $340.00 | 2026-10-29T01:07:59Z |
| 2026-12-11 → 2026-12-15 | American Airlines | AA5649 + AA5479 / AA647 + AA5446 | $310.00 | 2026-10-29T01:07:59Z |
| 2026-12-11 → 2026-12-15 | Delta Air Lines | DL5517 + DL5491 / DL5451 + DL4704 | $330.00 | 2026-10-29T01:07:59Z |
2026-12-11 → 2026-12-15 · $340.00
- United Airlines UA4068: IAD 2026-12-11 17:43:00 → SDF 2026-12-11 19:35:00; nonstop; 112 minutes. Local airport times.
- United Airlines UA4067: SDF 2026-12-15 14:25:00 → IAD 2026-12-15 16:03:00; nonstop; 98 minutes. Local airport times.
2026-12-11 → 2026-12-15 · $310.00
- American Airlines AA5649 / AA5479: IAD 2026-12-11 06:00:00 → SDF 2026-12-11 10:54:00; 1 stop(s) via CLT; 294 minutes. Local airport times.
- AA5649: IAD 2026-12-11 06:00:00 → CLT 2026-12-11 07:48:00; layover at CLT: 77 minutes.
- AA5479: CLT 2026-12-11 09:05:00 → SDF 2026-12-11 10:54:00.
- American Airlines AA647 / AA5446: SDF 2026-12-15 05:02:00 → IAD 2026-12-15 11:16:00; 1 stop(s) via CLT; 374 minutes. Local airport times.
- AA647: SDF 2026-12-15 05:02:00 → CLT 2026-12-15 06:30:00; layover at CLT: 195 minutes.
- AA5446: CLT 2026-12-15 09:45:00 → IAD 2026-12-15 11:16:00.
2026-12-11 → 2026-12-15 · $330.00
- Delta Air Lines DL5517 / DL5491: IAD 2026-12-11 11:30:00 → SDF 2026-12-11 17:16:00; 1 stop(s) via DTW; 346 minutes. Local airport times.
- DL5517: IAD 2026-12-11 11:30:00 → DTW 2026-12-11 13:09:00; layover at DTW: 161 minutes.
- DL5491: DTW 2026-12-11 15:50:00 → SDF 2026-12-11 17:16:00.
- Delta Air Lines DL5451 / DL4704: SDF 2026-12-15 17:56:00 → IAD 2026-12-15 23:10:00; 1 stop(s) via DTW; 314 minutes. Local airport times.
- DL5451: SDF 2026-12-15 17:56:00 → DTW 2026-12-15 19:22:00; layover at DTW: 128 minutes.
- DL4704: DTW 2026-12-15 21:30:00 → IAD 2026-12-15 23:10:00.
More dates for this route
- All dates for this route
- Nov 5, 2026 → Nov 8, 2026
- Nov 14, 2026 → Nov 21, 2026
- Nov 24, 2026 → Nov 29, 2026
- Dec 5, 2026 → Dec 12, 2026
- Dec 17, 2026 → Dec 20, 2026
- Dec 26, 2026 → Jan 2, 2027
- Jan 5, 2027 · One way
- Jan 16, 2027 → Jan 23, 2027
- Feb 5, 2027 → Feb 8, 2027
- Apr 3, 2027 → Apr 10, 2027
- Jun 26, 2027 → Jul 3, 2027
- Sep 17, 2027 → Sep 20, 2027