United Flight 4455 Deals & Information (2025/2026)

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United Flight 4455 Route Deals From $213

The cheapest prices found with in the last 7 days for return flights were $350 and $213 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Jul 26 - Tue, Jul 29
YOW
Macdonald-Cartier Intl.
IAD
Washington Dulles Intl.
$350 Roundtrip, found 17 hours ago
$350
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Jul 26 from Macdonald-Cartier Intl. to Washington Dulles Intl., returning Tue, Jul 29, priced at $350 found 17 hours ago
Sat, Jul 26 - Tue, Jul 29
YOW
Macdonald-Cartier Intl.
IAD
Washington Dulles Intl.
$357 Roundtrip, found 17 hours ago
$357
Roundtrip
found 17 hours ago
Select United flight, departing Sat, Jul 26 from Macdonald-Cartier Intl. to Washington Dulles Intl., returning Tue, Jul 29, priced at $357 found 17 hours ago
Sat, Jun 14 - Mon, Jun 16
YOW
Macdonald-Cartier Intl.
IAD
Washington Dulles Intl.
$358 Roundtrip, found 5 hours ago
$358
Roundtrip
found 5 hours ago
Select United flight, departing Sat, Jun 14 from Macdonald-Cartier Intl. to Washington Dulles Intl., returning Mon, Jun 16, priced at $358 found 5 hours ago

Frequently asked questions

What route does flight number UA4455 take?
UA4455 travels from Joe Foss Field to O’Hare Intl. Airport (ORD) and flies direct. This trip typically takes 1 hour and 44 minutes.
What kind of plane is on flight number UA4455?
Get ready to cruise aboard a Canadair (Bombardier) Regional Jet 550 if you’re taking off on flight UA4455. Almost all flights from Joe Foss Field to O’Hare Intl. Airport (ORD) are operated using this aircraft model.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA4455 flight with Travelocity, please visit our Customer Service Portal.