United Flight AC3637 Deals & Information (2025/2026)

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United Flight 3637 Route Deals From $144

The cheapest prices found with in the last 7 days for return flights were $212 and $144 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$212 Roundtrip, found 2 hours ago
$212
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $212 found 2 hours ago
Wed, Jul 23 - Sun, Jul 27
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$213 Roundtrip, found 5 days ago
$213
Roundtrip
found 5 days ago
Select United flight, departing Wed, Jul 23 from Pearson Intl. to Washington Dulles Intl., returning Sun, Jul 27, priced at $213 found 5 days ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$227 Roundtrip, found 2 hours ago
$227
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $227 found 2 hours ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$234 Roundtrip, found 2 hours ago
$234
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $234 found 2 hours ago
Mon, Aug 11 - Wed, Aug 20
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$237 Roundtrip, found 5 days ago
$237
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 11 from Pearson Intl. to Washington Dulles Intl., returning Wed, Aug 20, priced at $237 found 5 days ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$238 Roundtrip, found 2 hours ago
$238
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $238 found 2 hours ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$239 Roundtrip, found 2 hours ago
$239
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $239 found 2 hours ago
Mon, Aug 11 - Wed, Aug 20
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$246 Roundtrip, found 5 days ago
$246
Roundtrip
found 5 days ago
Select United flight, departing Mon, Aug 11 from Pearson Intl. to Washington Dulles Intl., returning Wed, Aug 20, priced at $246 found 5 days ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$249 Roundtrip, found 2 hours ago
$249
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $249 found 2 hours ago
Tue, Aug 19 - Tue, Aug 26
YYZ
Pearson Intl.
IAD
Washington Dulles Intl.
$253 Roundtrip, found 2 hours ago
$253
Roundtrip
found 2 hours ago
Select United flight, departing Tue, Aug 19 from Pearson Intl. to Washington Dulles Intl., returning Tue, Aug 26, priced at $253 found 2 hours ago

Frequently asked questions

What route does flight number UA3637 take?
UA3637 serves multiple routes, but the most common is between Chicago, IL Airport (ORD-O'Hare Intl.) and SAV. If your flight is direct, you'll disembark the plane in around 2 hours and 9 minutes. Multi-stop flights can also operate under the same number, as can flights on other routes.
What terminal does UA3637 fly out of?
You'll likely board the aircraft from Terminal 2 if you're starting your journey at O'Hare Intl. Airport (ORD). UA3637 serves a number of routes, but the direct flight between Chicago, IL Airport (ORD-O'Hare Intl.) and SAV is the most frequently traveled.
What kind of plane is on flight number UA3637?
UA3637 is a flight number that's used on multiple routes. If you've booked a ticket on the most popular route, O'Hare Airport to Savannah - Hilton Head Intl. Airport (SAV), you're likely to be boarding an Embraer 175.
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 UA3637 flight with Travelocity, please visit our Customer Service Portal.