United Flight 637 Deals & Information (2025/2026)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 637 Route Deals From $76

The cheapest prices found with in the last 7 days for return flights were $157 and $76 for one-way flights to Austin-Bergstrom Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Aug 16 - Wed, Aug 20
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$157 Roundtrip, found 3 days ago
$157
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 16 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Aug 20, priced at $157 found 3 days ago
Sat, Sep 27 - Mon, Oct 6
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$169 Roundtrip, found 1 day ago
$169
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 27 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Oct 6, priced at $169 found 1 day ago
Sat, Aug 16 - Wed, Aug 20
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$172 Roundtrip, found 3 days ago
$172
Roundtrip
found 3 days ago
Select United flight, departing Sat, Aug 16 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Aug 20, priced at $172 found 3 days ago
Fri, Aug 15 - Tue, Aug 19
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$177 Roundtrip, found 3 days ago
$177
Roundtrip
found 3 days ago
Select United flight, departing Fri, Aug 15 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Tue, Aug 19, priced at $177 found 3 days ago
Tue, Aug 26 - Thu, Aug 28
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$182 Roundtrip, found 1 day ago
$182
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 26 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Thu, Aug 28, priced at $182 found 1 day ago
Fri, Sep 5 - Mon, Sep 8
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$189 Roundtrip, found 2 days ago
$189
Roundtrip
found 2 days ago
Select United flight, departing Fri, Sep 5 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Sep 8, priced at $189 found 2 days ago
Fri, Aug 15 - Mon, Aug 18
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$192 Roundtrip, found 2 days ago
$192
Roundtrip
found 2 days ago
Select United flight, departing Fri, Aug 15 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Aug 18, priced at $192 found 2 days ago
Tue, Aug 26 - Thu, Aug 28
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$197 Roundtrip, found 1 day ago
$197
Roundtrip
found 1 day ago
Select United flight, departing Tue, Aug 26 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Thu, Aug 28, priced at $197 found 1 day ago
Sat, Sep 27 - Mon, Oct 6
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select United flight, departing Sat, Sep 27 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Oct 6, priced at $199 found 1 day ago
Sat, Nov 8 - Tue, Nov 11
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$203 Roundtrip, found 1 hour ago
$203
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Nov 8 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Tue, Nov 11, priced at $203 found 1 hour ago

Frequently asked questions

What route does flight number UA637 take?
UA637 flies direct between DIA airport and Minneapolis - St. Paul Intl. Airport (MSP) in about 1 hour and 59 minutes. It can be used on other routes though, some of which may be multi-stop flights. Keep an eye out for this when locking in your seat to avoid any mix-ups.
What kind of plane is on flight number UA637?
UA637 is a flight number that serves multiple routes. If you're traveling on its most popular route, Denver Intl. Airport (DEN) to Wold--Chamberlain Field, there's a strong chance you'll be hopping aboard an Airbus A319.
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 UA637 flight with Travelocity, please visit our Customer Service Portal.