Cheap Flights to Williams County from $50

View $50 flight on Sat, Jun 27, 2026Opens in a new window

Popular airlines to Williams County

  • United

  • Delta

  • Cape Air

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How much is the cheapest flight to Williams County?

Prices were available within the past 7 days and start at $50 for one-way flights and $100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Cape Air
Fri, May 22 - Mon, May 25
BIL
Billings
SDY
Sidney
$100 Roundtrip, just found
$100
Roundtrip
just found
Select Cape Air flight, departing Fri, May 22 from Billings to Sidney, returning Mon, May 25, priced at $100 just found
Cape Air
Fri, May 22 - Mon, May 25
BIL
Billings
SDY
Sidney
$110 Roundtrip, just found
$110
Roundtrip
just found
Select Cape Air flight, departing Fri, May 22 from Billings to Sidney, returning Mon, May 25, priced at $110 just found
Cape Air
Sun, May 24 - Thu, May 28
BIL
Billings
SDY
Sidney
$110 Roundtrip, found 6 days ago
$110
Roundtrip
found 6 days ago
Select Cape Air flight, departing Sun, May 24 from Billings to Sidney, returning Thu, May 28, priced at $110 found 6 days ago
Cape Air
Sat, Jun 27 - Tue, Jun 30
BIL
Billings
SDY
Sidney
$120 Roundtrip, found 12 hours ago
$120
Roundtrip
found 12 hours ago
Select Cape Air flight, departing Sat, Jun 27 from Billings to Sidney, returning Tue, Jun 30, priced at $120 found 12 hours ago
Cape Air
Sun, May 24 - Wed, May 27
BIL
Billings
SDY
Sidney
$130 Roundtrip, found 23 hours ago
$130
Roundtrip
found 23 hours ago
Select Cape Air flight, departing Sun, May 24 from Billings to Sidney, returning Wed, May 27, priced at $130 found 23 hours ago
Delta
Sat, Aug 1 - Wed, Aug 5
DFW
Dallas
XWA
Williston
$308 Roundtrip, found 10 hours ago
$308
Roundtrip
found 10 hours ago
Select Delta flight, departing Sat, Aug 1 from Dallas to Williston, returning Wed, Aug 5, priced at $308 found 10 hours ago
United
Wed, Aug 19 - Sun, Aug 23
SEA
Seattle
XWA
Williston
$308 Roundtrip, found 5 days ago
$308
Roundtrip
found 5 days ago
Select United flight, departing Wed, Aug 19 from Seattle to Williston, returning Sun, Aug 23, priced at $308 found 5 days ago
Delta
Tue, Aug 4 - Fri, Aug 21
LAX
Los Angeles
XWA
Williston
$318 Roundtrip, found 1 day ago
$318
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Aug 4 from Los Angeles to Williston, returning Fri, Aug 21, priced at $318 found 1 day ago
Delta
Wed, Jul 8 - Tue, Jul 28
LAX
Los Angeles
XWA
Williston
$324 Roundtrip, found 1 day ago
$324
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Jul 8 from Los Angeles to Williston, returning Tue, Jul 28, priced at $324 found 1 day ago
Alaska Airlines
Fri, Jul 17 - Tue, Jul 21
SEA
Seattle
SDY
Sidney
$434 Roundtrip, found 5 hours ago
$434
Roundtrip
found 5 hours ago
Select Alaska Airlines flight, departing Fri, Jul 17 from Seattle to Sidney, returning Tue, Jul 21, priced at $434 found 5 hours ago

Trending flights to Williams 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.

Delta
Tue, Jun 9 - Tue, Jun 23
MSP
Minneapolis
XWA
Williston
$248 Roundtrip, found 1 hour ago
$248
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Jun 9 from Minneapolis to Williston, returning Tue, Jun 23, priced at $248 found 1 hour ago

Frequently asked questions

How do I find cheap flights to Williams County that have flexible change policies?
When it comes to flying these days, flexibility is crucial. That's why we've added a "No change fee" search function to help you track down cheap and flexible tickets to Williams County. It's at the top left of your screen just below the "Flexible change policies" heading.
Which airlines fly to Williams County?
Choose from these two respected airlines that have flights to or near Williams County:

  • United Airlines - 82 flights to or near Williams County each month, including 82 flights to Basin Intl. Airport (XWA) per month.
  • Delta Air Lines - 52 flights to or near Williams County each month, including 52 flights to Basin Intl. Airport (XWA) per month.

How can I find cheap tickets to Williams County?
Start searching as early as possible, fly in or out of nearby airports, avoid vacation periods — you're not short of ways! Another one is to use Expedia's "flexible dates" function. Search for your Williams County flight, then compare the cheapest prices for nearby dates. In the last seven days, the lowest price for a flight to Williams County was $100.
How much is a flight to Williams County?
One-way trips departing from Billings (BIL) sold for just $50 in the last seven days. During this period, the cost of a round-trip journey to Williams County ranged between $100 and $434. If you spot a bargain ticket, book quickly — these fares don't hang around for long.
What are the most popular airports to fly into in Williams County?
The primary gateway to Williams County, around 134 flights cruise into Basin Intl. Airport (XWA) every month. Search for an unbeatable deal, book your ticket and prepare to soak up the best of this wonderful region.
When is the cheapest time to fly to Williams County?
Fly out on a Tuesday to raise your chances of picking up the cheapest fare to Williams County. Mondays are usually the next most affordable day to depart. Saturday is normally the costliest day to fly anywhere.
How much is a plane ticket to Williams County?
In the last seven days, airfares to Williams County varied from $100 to $434.
What months are the cheapest to book a flight to Williams County?
To land a bargain flight to Williams County, try to book during the month of February when the price of tickets are at their lowest. What time of year is expensive? In the U.S, it's the month of December.
What is the best time to go to Williams County?
July, September and October are popular months to discover Williston, one of Williams County's most interesting cities. Summer here begins June 20. Temperatures vary from 60ºF to 80ºF at this time of year, so visit around then if you're looking for warmer weather.

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Travel information

*Flight schedules are subject to change.

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*Flight schedules are subject to change.

*Available to One Key members.