United Flight 3635 Deals & Information (2026/2027)

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United Flight 3635 Route Deals From $160

The cheapest prices found with in the last 7 days for return flights were $189 and $160 for one-way flights to Portland Intl. Jetport for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jun 17 - Tue, Jun 23
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$189 Roundtrip, found 1 hour ago
$189
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Jun 17 from Washington Dulles Intl. to Portland Intl. Jetport, returning Tue, Jun 23, priced at $189 found 1 hour ago
Wed, Apr 1 - Wed, Apr 8
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$210 Roundtrip, found 3 days ago
$210
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 1 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Apr 8, priced at $210 found 3 days ago
Sat, Jun 6 - Sat, Jun 13
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$218 Roundtrip, found 16 hours ago
$218
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Jun 6 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Jun 13, priced at $218 found 16 hours ago
Sat, Jun 6 - Sat, Jun 13
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$227 Roundtrip, found 16 hours ago
$227
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Jun 6 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Jun 13, priced at $227 found 16 hours ago
Wed, Jun 17 - Tue, Jun 23
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$243 Roundtrip, found 1 hour ago
$243
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Jun 17 from Washington Dulles Intl. to Portland Intl. Jetport, returning Tue, Jun 23, priced at $243 found 1 hour ago
Sat, Jun 13 - Sun, Jun 14
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$249 Roundtrip, found 1 day ago
$249
Roundtrip
found 1 day ago
Select United flight, departing Sat, Jun 13 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sun, Jun 14, priced at $249 found 1 day ago
Sat, Jun 6 - Sat, Jun 13
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$256 Roundtrip, found 16 hours ago
$256
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Jun 6 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Jun 13, priced at $256 found 16 hours ago
Sat, Jun 6 - Sat, Jun 13
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$265 Roundtrip, found 16 hours ago
$265
Roundtrip
found 16 hours ago
Select United flight, departing Sat, Jun 6 from Washington Dulles Intl. to Portland Intl. Jetport, returning Sat, Jun 13, priced at $265 found 16 hours ago
Wed, Apr 1 - Wed, Apr 8
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$265 Roundtrip, found 3 days ago
$265
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 1 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Apr 8, priced at $265 found 3 days ago
Wed, Apr 1 - Wed, Apr 8
IAD
Washington Dulles Intl.
PWM
Portland Intl. Jetport
$270 Roundtrip, found 3 days ago
$270
Roundtrip
found 3 days ago
Select United flight, departing Wed, Apr 1 from Washington Dulles Intl. to Portland Intl. Jetport, returning Wed, Apr 8, priced at $270 found 3 days ago

Frequently asked questions

What route does flight number UA3635 take?
UA3635 flies direct between Pittsburgh, PA Airport (PIT-Pittsburgh Intl.) and O'Hare Intl. Airport (ORD) in around 1 hour and 35 minutes. It can sometimes 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 confusion.
What kind of plane is on flight number UA3635?
If you're considering booking flight UA3635 from Pittsburgh Intl. Airport (PIT) to ORD, there's a strong chance you'll be traveling aboard the Embraer 175. This flight number serves a number of different routes, but this is the busiest.
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 UA3635 flight with Travelocity, please visit our Customer Service Portal.