Fly out of the East Valley much? Then you already know the secret the rest of Phoenix is still catching onto: Mesa Gateway Airport (AZA) is the easy way out of town. Just over two million passengers used it in 2025 — a record — and yet you can still park, clear security, and be at your gate in the time it takes to find parking at Sky Harbor. The trade-off is a shorter list of airlines and destinations, and that list changes more often than most websites bother to update. Here's the accurate 2026 picture.
What Airlines Fly Out of Mesa Gateway Airport in 2026?
Two airlines operate scheduled passenger service at Mesa Gateway Airport in 2026: Allegiant Air and Sun Country Airlines.
Allegiant Air is the reason Gateway exists as a passenger airport. Allegiant arrived in 2007, built Gateway into one of its busiest bases, and today accounts for the overwhelming majority of flights here — roughly 45 nonstop destinations, almost all leisure routes flown a few days a week at ultra-low fares. Allegiant keeps growing here, too: in February 2026 it added three new nonstops from Gateway — Orange County (John Wayne Airport), La Crosse, Wisconsin, and Bloomington/Normal, Illinois.
Sun Country Airlines is the second carrier, connecting Gateway to its Minneapolis–St. Paul home base on a seasonal schedule — a snowbird special, timed to the months when half of Minnesota seems to relocate to the East Valley.
If you've seen other names attached to this airport, that information is out of date. WestJet, Swoop, Flair, and Avelo have all flown from Gateway at various points over the past decade, and none of them do today — WestJet and Swoop didn't return after the 2022–23 winter season, and Flair moved its Phoenix flying to Sky Harbor in late 2023. Any site telling you American, Spirit, or a Canadian carrier flies from Mesa Gateway is describing a different year.
Where Can You Fly Nonstop from Mesa Gateway?
Around 45 destinations, nearly all on Allegiant, with a map that leans hard toward the Midwest, the Mountain West, and the West Coast — the places Arizonans come from and go back to visit. Think Indianapolis, Milwaukee, Kansas City, Omaha, St. Louis, Louisville, Des Moines, Boise, St. George, Portland, and Tampa/St. Pete, plus the 2026 additions of Orange County, La Crosse, and Bloomington.
Two things to know before you build a trip around that list. First, it's seasonal — the schedule swells in winter when snowbird demand peaks, and some routes pause entirely in summer. Second, Allegiant's model is a few flights per week per route, not daily service, so your travel dates matter more here than they do at a big hub. Always check the airport's live route map or Allegiant's schedule for your specific dates before assuming a route flies that day.
Mesa Gateway, Williams Gateway, IWA, AZA — Same Airport, Four Names
If you grew up here, it's Williams. The airport began life in 1941 as Williams Air Force Base, trained tens of thousands of military pilots over five decades, and closed as a base in 1993. It reopened for civilian use as Williams Gateway Airport, was renamed Phoenix–Mesa Gateway in October 2007 — the same month Allegiant arrived — and today brands itself simply as Mesa Gateway Airport.
The codes confuse people for good reason. Your boarding pass says AZA (the IATA code), while pilots and flight trackers use KIWA (the ICAO code, inherited from the Williams days) — so "IWA" and "AZA" are the same runways. And those runways are the Air Force's parting gift: three of them, the longest over 10,000 feet, which is more concrete than airports ten times Gateway's size.
Mesa Gateway vs. Sky Harbor: Which Should You Fly?
Honest answer: it depends on what you're optimizing for.
Gateway wins on experience and price. Two million passengers a year versus Sky Harbor's fifty-plus million means shorter security lines, a five-minute walk from curb to gate, parking that costs a fraction of Sky Harbor's garages, and Allegiant fares that are frequently the cheapest way out of Arizona. If you live in Mesa, Gilbert, Chandler, or Queen Creek, it's also simply closer.
Sky Harbor wins on options. It has every major airline, daily frequencies, international service, and — the part people forget — recovery options. When a flight cancels at Sky Harbor, there's usually another one today. When a flight cancels at Gateway, the next one to that city might be Thursday. For a flexible leisure trip, Gateway is the smart play. For a can't-miss business meeting, book the frequency.
Getting to Mesa Gateway Airport
Gateway sits in southeast Mesa at 6033 S Sossaman Rd, just off the Loop 202 and the SR-24 Gateway Freeway. Rough drive times: 10–15 minutes from Queen Creek, 15–20 from Gilbert or central Mesa, 20–25 from Chandler, about 30 from Tempe, and 35–45 from Scottsdale or downtown Phoenix depending on the hour.
Parking is close-in and cheap by airport standards — one of Gateway's genuine advantages. If you'd rather skip the lot entirely, or you're catching one of Allegiant's early departures, our car service to Mesa Gateway Airport covers the entire Valley in both directions, with flight tracking, flat rates locked at booking, and pickups confirmed the night before.
Mesa Gateway Airport FAQ
What airlines fly out of Mesa Gateway?
Allegiant Air and Sun Country Airlines — that's the complete 2026 list. Allegiant operates the vast majority of flights, around 45 nonstop leisure destinations; Sun Country flies seasonally to Minneapolis–St. Paul.
Is Mesa Gateway the same as Williams Gateway? What does IWA mean?
Yes — same airport. It was Williams Air Force Base until 1993, then Williams Gateway, then Phoenix–Mesa Gateway, and now Mesa Gateway. IWA comes from its ICAO code KIWA; AZA is the airline booking code. All of them point to the same place.
How far is Mesa Gateway from Phoenix?
About 30 miles southeast of downtown Phoenix — typically 35–45 minutes by car via the US-60 or Loop 202. From most of the East Valley it's a 10–25 minute drive.
Is it cheaper to fly out of Mesa Gateway than Sky Harbor?
Often, yes — Allegiant's ultra-low-cost model means base fares from Gateway are frequently the lowest in the market, and parking costs less too. Just price the whole trip: Allegiant charges separately for bags, seats, and extras, and its schedule may not match your exact dates.
Does Sun Country still fly out of Mesa Gateway?
Yes. Sun Country runs seasonal nonstop service between Gateway and Minneapolis–St. Paul, concentrated in the winter travel season.
Flying out of Gateway this year? Book your ride to the terminal the same day you book the flight — early Allegiant departures are exactly when a confirmed pickup beats hoping a rideshare accepts at 4am.