Cheap Flights to Union County from $2,807 MXN

View $2,807 MXN flight on Tue, 2 Jun 2026Opens in a new window

Flight 1

Flight 2

Popular airlines to Union County

  • American Airlines

  • Delta

  • United

  • Southwest Airlines

  • Alaska Airlines

  • Frontier Airlines

  • Lufthansa

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Union County?

Prices were available within the past 7 days and start at $2,807 MXN for one-way flights and $5,286 MXN for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Fri, 10 Jul - Fri, 17 Jul
DFW
Dallas
TYS
Knoxville
$5,286 MXN Roundtrip, found 12 hours ago
$5,286 MXN
Roundtrip
found 12 hours ago
Select Delta flight, departing Fri, 10 Jul from Dallas to Knoxville, returning Fri, 17 Jul, priced at $5,286 MXN found 12 hours ago
Delta
Tue, 5 May - Wed, 20 May
MFE
McAllen
TYS
Knoxville
$5,717 MXN Roundtrip, found 5 days ago
$5,717 MXN
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, 5 May from McAllen to Knoxville, returning Wed, 20 May, priced at $5,717 MXN found 5 days ago
Delta
Sat, 18 Apr - Wed, 6 May
MFE
McAllen
TYS
Knoxville
$5,967 MXN Roundtrip, found 5 days ago
$5,967 MXN
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, 18 Apr from McAllen to Knoxville, returning Wed, 6 May, priced at $5,967 MXN found 5 days ago
Delta
Fri, 10 Jul - Fri, 17 Jul
DFW
Dallas
TYS
Knoxville
$6,017 MXN Roundtrip, found 12 hours ago
$6,017 MXN
Roundtrip
found 12 hours ago
Select Delta flight, departing Fri, 10 Jul from Dallas to Knoxville, returning Fri, 17 Jul, priced at $6,017 MXN found 12 hours ago
Delta
Sat, 25 Apr - Sat, 2 May
MFE
McAllen
TYS
Knoxville
$6,070 MXN Roundtrip, found 2 days ago
$6,070 MXN
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, 25 Apr from McAllen to Knoxville, returning Sat, 2 May, priced at $6,070 MXN found 2 days ago
Delta
Sat, 25 Apr - Tue, 28 Apr
MFE
McAllen
TYS
Knoxville
$6,123 MXN Roundtrip, found 2 days ago
$6,123 MXN
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, 25 Apr from McAllen to Knoxville, returning Tue, 28 Apr, priced at $6,123 MXN found 2 days ago
American Airlines
Fri, 10 Jul - Fri, 17 Jul
DFW
Dallas
TYS
Knoxville
$6,360 MXN Roundtrip, found 12 hours ago
$6,360 MXN
Roundtrip
found 12 hours ago
Select American Airlines flight, departing Fri, 10 Jul from Dallas to Knoxville, returning Fri, 17 Jul, priced at $6,360 MXN found 12 hours ago
United
Tue, 28 Apr - Wed, 29 Apr
MFE
McAllen
TYS
Knoxville
$7,361 MXN Roundtrip, found 2 days ago
$7,361 MXN
Roundtrip
found 2 days ago
Select United flight, departing Tue, 28 Apr from McAllen to Knoxville, returning Wed, 29 Apr, priced at $7,361 MXN found 2 days ago
Aeromexico
Thu, 21 May - Mon, 25 May
GDL
Guadalajara
TYS
Knoxville
$9,718 MXN Roundtrip, found 3 hours ago
$9,718 MXN
Roundtrip
found 3 hours ago
Select Aeromexico flight, departing Thu, 21 May from Guadalajara to Knoxville, returning Mon, 25 May, priced at $9,718 MXN found 3 hours ago
Air Canada
Mon, 14 Sep - Thu, 17 Sep
MEX
Mexico City
TYS
Knoxville
$17,216 MXN Roundtrip, found 4 days ago
$17,216 MXN
Roundtrip
found 4 days ago
Select Air Canada flight, departing Mon, 14 Sep from Mexico City to Knoxville, returning Thu, 17 Sep, priced at $17,216 MXN found 4 days ago

Trending flights to Union County

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.

United
Wed, 15 Jul - Tue, 4 Aug
OAX
Oaxaca
TYS
Knoxville
$9,175 MXN Roundtrip, found 2 days ago
$9,175 MXN
Roundtrip
found 2 days ago
Select United flight, departing Wed, 15 Jul from Oaxaca to Knoxville, returning Tue, 4 Aug, priced at $9,175 MXN found 2 days ago

Explore a world of travel with Expedia

*Available to Expedia members.