United Flight 5321 Deals & Information (2026/2027)

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United Flight 5321 Route Deals From $172

The cheapest prices found with in the last 7 days for return flights were $239 and $172 for one-way flights to Austin Straubel Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$239 Roundtrip, found 19 hours ago
$239
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $239 found 19 hours ago
Fri, Jun 5 - Sun, Jun 7
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$245 Roundtrip, found 3 days ago
$245
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jun 5 from O'Hare Intl. to Austin Straubel Intl., returning Sun, Jun 7, priced at $245 found 3 days ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$250 Roundtrip, found 19 hours ago
$250
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $250 found 19 hours ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$254 Roundtrip, found 19 hours ago
$254
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $254 found 19 hours ago
Fri, Jun 5 - Sun, Jun 7
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$258 Roundtrip, found 3 days ago
$258
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jun 5 from O'Hare Intl. to Austin Straubel Intl., returning Sun, Jun 7, priced at $258 found 3 days ago
Fri, Jun 5 - Sun, Jun 7
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$260 Roundtrip, found 3 days ago
$260
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jun 5 from O'Hare Intl. to Austin Straubel Intl., returning Sun, Jun 7, priced at $260 found 3 days ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$265 Roundtrip, found 19 hours ago
$265
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $265 found 19 hours ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$270 Roundtrip, found 19 hours ago
$270
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $270 found 19 hours ago
Fri, Jun 5 - Sun, Jun 7
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$273 Roundtrip, found 3 days ago
$273
Roundtrip
found 3 days ago
Select United flight, departing Fri, Jun 5 from O'Hare Intl. to Austin Straubel Intl., returning Sun, Jun 7, priced at $273 found 3 days ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$276 Roundtrip, found 1 hour ago
$276
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Austin Straubel Intl., returning Sun, May 17, priced at $276 found 1 hour ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$283 Roundtrip, found 19 hours ago
$283
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $283 found 19 hours ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$285 Roundtrip, found 19 hours ago
$285
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $285 found 19 hours ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$296 Roundtrip, found 19 hours ago
$296
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $296 found 19 hours ago
Tue, Aug 11 - Fri, Aug 28
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$298 Roundtrip, found 19 hours ago
$298
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Aug 11 from O'Hare Intl. to Austin Straubel Intl., returning Fri, Aug 28, priced at $298 found 19 hours ago
Fri, May 15 - Sun, May 17
ORD
O'Hare Intl.
GRB
Austin Straubel Intl.
$300 Roundtrip, found 1 hour ago
$300
Roundtrip
found 1 hour ago
Select United flight, departing Fri, May 15 from O'Hare Intl. to Austin Straubel Intl., returning Sun, May 17, priced at $300 found 1 hour ago

Frequently asked questions

What route does flight number UA5321 take?
UA5321 flies direct from Boise, ID Airport (BOI) to San Francisco Airport. During this journey, you'll be in the air for roughly 1 hour and 46 minutes. It's wise to book ahead to lock in your favorite seat.
How often is UA5321 on time?
United Airlines flight number UA5321 from Boise Airport to San Francisco Airport operates according to schedule 98% of the time — so you can relax knowing that you will arrive at your destination ASAP. If this trip is delayed, you can expect to wait roughly 15 minutes. This route has a star rating of 4.3.
What kind of plane is on flight number UA5321?
You're likely to find yourself stepping on board the Bombardier CRJ700 if you're on flight UA5321. This flight nearly always jets off from Boise Airport and comes in to land at SFO.
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 UA5321 flight with Travelocity, please visit our Customer Service Portal.