United Flight 5231 Deals & Information (2026/2027)

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United Flight 5231 Route Deals From $269

The cheapest prices found with in the last 7 days for return flights were $324 and $269 for one-way flights to Quad City Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$324 Roundtrip, found 5 days ago
$324
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $324 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$377 Roundtrip, found 5 days ago
$377
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $377 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$414 Roundtrip, found 5 days ago
$414
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $414 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$467 Roundtrip, found 5 days ago
$467
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $467 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$488 Roundtrip, found 5 days ago
$488
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $488 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$489 Roundtrip, found 5 days ago
$489
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $489 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$530 Roundtrip, found 5 days ago
$530
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $530 found 5 days ago
Wed, Dec 9 - Fri, Dec 11
ORD
O'Hare Intl.
MLI
Quad City Intl.
$537 Roundtrip, found 5 days ago
$537
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 9 from O'Hare Intl. to Quad City Intl., returning Fri, Dec 11, priced at $537 found 5 days ago
Wed, Dec 9 - Fri, Dec 11
ORD
O'Hare Intl.
MLI
Quad City Intl.
$547 Roundtrip, found 5 days ago
$547
Roundtrip
found 5 days ago
Select United flight, departing Wed, Dec 9 from O'Hare Intl. to Quad City Intl., returning Fri, Dec 11, priced at $547 found 5 days ago
Wed, Nov 18 - Wed, Nov 25
ORD
O'Hare Intl.
MLI
Quad City Intl.
$553 Roundtrip, found 5 days ago
$553
Roundtrip
found 5 days ago
Select United flight, departing Wed, Nov 18 from O'Hare Intl. to Quad City Intl., returning Wed, Nov 25, priced at $553 found 5 days 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.