United Flight 5231 Deals & Information (2026/2027)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

United Flight 5231 Route Deals From $274

The cheapest prices found with in the last 7 days for return flights were $319 and $274 for one-way flights to Quad City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$319 Roundtrip, found 17 hours ago
$319
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $319 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$357 Roundtrip, found 17 hours ago
$357
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $357 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$409 Roundtrip, found 17 hours ago
$409
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $409 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$447 Roundtrip, found 17 hours ago
$447
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $447 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$479 Roundtrip, found 17 hours ago
$479
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $479 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$522 Roundtrip, found 17 hours ago
$522
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $522 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$525 Roundtrip, found 17 hours ago
$525
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $525 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$612 Roundtrip, found 17 hours ago
$612
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $612 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$625 Roundtrip, found 17 hours ago
$625
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $625 found 17 hours ago
Fri, Feb 12 - Mon, Feb 15
ORD
O'Hare Intl.
MLI
Quad City Intl.
$657 Roundtrip, found 17 hours ago
$657
Roundtrip
found 17 hours ago
Select United flight, departing Fri, Feb 12 from O'Hare Intl. to Quad City Intl., returning Mon, Feb 15, priced at $657 found 17 hours ago

Frequently asked questions

What route does flight number UA5231 take?
UA5231 is used on multiple routes. Most often, UA5231 flies direct from San Francisco Airport to John Wayne Airport (SNA). If you have a ticket on this route, you'll be flying for around 1 hour and 29 minutes.
What terminal does UA5231 fly out of?
UA5231 flights from San Francisco Airport usually head off from Terminal 3. This flight number runs on multiple routes, but the most popular one is San Francisco Airport to SNA.
What kind of plane is on flight number UA5231?
If you're on flight UA5231 from San Francisco Intl. Airport (SFO) to John Wayne Airport, there's a good chance you'll be on board a Bombardier CRJ700. Flight UA5231 serves numerous routes, but this is the most popular one.
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 UA5231 flight with Travelocity, please visit our Customer Service Portal.