United Flight 637 Deals & Information (2025/2026)

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United Flight 637 Route Deals From $100

The cheapest prices found with in the last 7 days for return flights were $199 and $100 for one-way flights to Austin-Bergstrom Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$199 Roundtrip, found 1 day ago
$199
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $199 found 1 day ago
Thu, Sep 4 - Mon, Sep 8
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$200 Roundtrip, found 5 days ago
$200
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 4 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Sep 8, priced at $200 found 5 days ago
Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$204 Roundtrip, found 1 day ago
$204
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $204 found 1 day ago
Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$209 Roundtrip, found 1 day ago
$209
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $209 found 1 day ago
Thu, Sep 4 - Mon, Sep 8
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$210 Roundtrip, found 5 days ago
$210
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 4 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Sep 8, priced at $210 found 5 days ago
Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$214 Roundtrip, found 1 day ago
$214
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $214 found 1 day ago
Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$218 Roundtrip, found 1 day ago
$218
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $218 found 1 day ago
Thu, Sep 4 - Mon, Sep 8
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$220 Roundtrip, found 5 days ago
$220
Roundtrip
found 5 days ago
Select United flight, departing Thu, Sep 4 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Sep 8, priced at $220 found 5 days ago
Thu, Aug 14 - Wed, Sep 10
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$226 Roundtrip, found 1 day ago
$226
Roundtrip
found 1 day ago
Select United flight, departing Thu, Aug 14 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Wed, Sep 10, priced at $226 found 1 day ago
Mon, Sep 8 - Mon, Sep 15
IAD
Washington Dulles Intl.
AUS
Austin-Bergstrom Intl.
$234 Roundtrip, found 2 days ago
$234
Roundtrip
found 2 days ago
Select United flight, departing Mon, Sep 8 from Washington Dulles Intl. to Austin-Bergstrom Intl., returning Mon, Sep 15, priced at $234 found 2 days 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.