United Flight 3631 Deals & Information (2025/2026)

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United Flight 3631 Route Deals From $84

The cheapest prices found with in the last 7 days for return flights were $141 and $84 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$141 Roundtrip, found 5 days ago
$141
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $141 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$168 Roundtrip, found 5 days ago
$168
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $168 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$183 Roundtrip, found 5 days ago
$183
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $183 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$199 Roundtrip, found 5 days ago
$199
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $199 found 5 days ago
Thu, Oct 23 - Sun, Oct 26
ALB
Albany Intl.
ORD
O'Hare Intl.
$202 Roundtrip, found 5 days ago
$202
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 23 from Albany Intl. to O'Hare Intl., returning Sun, Oct 26, priced at $202 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$210 Roundtrip, found 5 days ago
$210
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $210 found 5 days ago
Thu, Oct 23 - Sun, Oct 26
ALB
Albany Intl.
ORD
O'Hare Intl.
$212 Roundtrip, found 5 days ago
$212
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 23 from Albany Intl. to O'Hare Intl., returning Sun, Oct 26, priced at $212 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 5 days ago
$213
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $213 found 5 days ago
Thu, Oct 23 - Sun, Oct 26
ALB
Albany Intl.
ORD
O'Hare Intl.
$216 Roundtrip, found 5 days ago
$216
Roundtrip
found 5 days ago
Select United flight, departing Thu, Oct 23 from Albany Intl. to O'Hare Intl., returning Sun, Oct 26, priced at $216 found 5 days ago
Thu, Aug 21 - Mon, Aug 25
ALB
Albany Intl.
ORD
O'Hare Intl.
$219 Roundtrip, found 5 days ago
$219
Roundtrip
found 5 days ago
Select United flight, departing Thu, Aug 21 from Albany Intl. to O'Hare Intl., returning Mon, Aug 25, priced at $219 found 5 days ago

Frequently asked questions

What route does flight number UA3631 take?
UA3631 serves multiple routes, but the most common is between Buffalo Niagara Intl. Airport (BUF) and ORD. If your flight goes direct, you'll arrive in 1 hour and 54 minutes. Multi-stop flights can also operate under this number, as can flights on other routes.
What kind of plane is on flight number UA3631?
If you're booked on flight UA3631 from Buffalo Niagara Intl. Airport (BUF) to O'Hare Intl. Airport (ORD), you'll most likely be on board an Embraer 170. Flight UA3631 serves multiple 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 UA3631 flight with Travelocity, please visit our Customer Service Portal.