Cheap Flights To Union 2026

Union Flights as Low as $117

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Nov 9 - Wed, Nov 11
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$117
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 9 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Wed, Nov 11, priced at $117 found 1 day ago
Frontier Airlines
Delta
Mon, Nov 9 - Fri, Nov 13
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$134
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Nov 9 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Fri, Nov 13, priced at $134 found 1 day ago
Frontier Airlines
Delta
Fri, Nov 13 - Fri, Nov 27
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$151
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Nov 13 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Fri, Nov 27, priced at $151 found 1 day ago
Delta
Tue, Nov 10 - Wed, Nov 11
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$157
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 10 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Wed, Nov 11, priced at $157 found 1 day ago
Delta
Tue, Nov 10 - Fri, Nov 13
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$174
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Nov 10 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Fri, Nov 13, priced at $174 found 1 day ago
Delta
Wed, Nov 4 - Tue, Nov 17
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$184
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Nov 4 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Tue, Nov 17, priced at $184 found 1 day ago
American Airlines
American Airlines
United
Fri, Nov 13 - Fri, Nov 13
MSP
Minneapolis - St. Paul Intl.
STL
Lambert-St. Louis Intl.
$241
Roundtrip
found 1 day ago
Select United flight, departing Fri, Nov 13 from Minneapolis - St. Paul Intl. to Lambert-St. Louis Intl., returning Fri, Nov 13, priced at $241 found 1 day ago
Frontier Airlines
Mon, Oct 5 - Wed, Oct 7
BWI
Baltimore Washington Intl. Thurgood Marshall
STL
Lambert-St. Louis Intl.
$256
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Oct 5 from Baltimore Washington Intl. Thurgood Marshall to Lambert-St. Louis Intl., returning Wed, Oct 7, priced at $256 found 3 days ago
Southwest Airlines
Delta
Wed, Nov 11 - Sat, Nov 14
FSD
Sioux Falls Regional
STL
Lambert-St. Louis Intl.
$293
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Nov 11 from Sioux Falls Regional to Lambert-St. Louis Intl., returning Sat, Nov 14, priced at $293 found 1 day ago
American Airlines
American Airlines

Flights to Union

Do you have a travel itch? Maybe it's time to book a flight to Union. And with the AARP Travel Center Powered by Expedia®, can become a reality sooner than you think. With the best rates from Expedia combined with members-only discounts, AARP Travel offers members the best price in travel, guaranteed. As an AARP member, you'll pay no booking fees on flights, and often receive exclusive rates on hotels and car rentals.

Once you've got your trip scheduled, we will show you a full list of deals for your route. Don't forget to look at flights to alternative airports nearby, which can help you score a lower fare.

Airport Transportation

Once you have reserved plane tickets to Union, you may want to book a vehicle so you can get around Union. You can book Union rental cars under our cars tab and get into the driver's seat right when you step out of the airport. For more information, check out the Union Car Rentals Guide.

Union Activities

If you aren't sure where to start, we can help you with that too. Not to worry—there's lots to do in this city. No matter what you decide to do with your time, you're sure to have fun in this city.

If you're looking for some fun activities to do in Union, make sure you check out our "Things to Do in Union" page for excursions and activities for the whole family.

Book Your Hotel in Union

Union has lodging options in the area, so you will have no trouble finding a place to stay close to all the things you want to see. If you need to stay close to the airport, or another attraction in Union, check out our hotel listings page. No matter where you stay, just remember that you'll get the best for your trip when you book your stay with AARP Travel.

Planning Your Trip

Once you've decided when you want to visit, allow us here at AARP Travel to connect you with affordable tickets to Union. Don't wait a moment longer—book your airfare today and land in Union tomorrow.