Alaska Airlines vs Southwest: Which Airline Is Better in 2026?

Pick Alaska Airlines if arriving on time matters most, if you want a first class seat, or if you fly from Seattle, to Hawaii or overseas. Alaska led every US airline network on punctuality from January to August 2026, at 78.6% against Southwest’s 73.1%.

Pick Southwest if a canceled flight, a lost bag or a change of plans would hurt more. It canceled fewer flights, mishandled fewer bags and drew well under half the complaints per flight, and its cheapest fare can still be canceled for credit.

They are not the same size. Southwest scheduled 686,476 flights in the first half of 2026 and Alaska’s network 246,145, so every comparison below is a rate, not a total.

The figures come from the DOT’s Air Travel Consumer Reports for 2026 and from the two airlines’ own pages and results as of November 2026. For Alaska against a bigger network carrier, see our Alaska vs Delta comparison.

Arriving on time

Alaska’s network arrived on time on 78.6% of its flights from January to August 2026, first among US airline networks in the DOT’s ranking. Southwest managed 73.1% and ranked fourth, behind Delta and United.

The gap of 5.5 points works out at roughly one extra late arrival every 18 flights on Southwest. Over the first half alone Alaska ran at 80.51%, the best of the nine carriers the DOT ranked.

“For Alaska and Hawaiian, reliability is a form of respect and operational excellence is an act of care.”

Jason Berry, Alaska Airlines chief operating officer, July 9, 2026

Alaska’s figure includes Hawaiian Airlines. The two have flown under one FAA operating certificate since October 29, 2025, so the DOT now reports them as one network.

Edge: Alaska. First on punctuality, five and a half points clear of Southwest.

Cancellations, bags and complaints

Here the order flips. Southwest canceled 7,187 of 686,476 scheduled flights from January to June 2026, or 1.05%. Alaska’s network canceled 3,043 of 246,145, or 1.24%.

That is about 10 canceled flights per 1,000 on Southwest and 12 on Alaska. Southwest flies every one of its own flights, while Alaska’s count includes regional partners that fly some of its shorter routes.

Bags split the same way. Southwest mishandled 0.32 bags per 100 checked, about one in every 310, and Alaska 0.53, about one in every 190.

Complaints split widest. The DOT logged 1,047 complaint cases against Alaska and 1,249 against Southwest over those six months, or 425 and 182 per 100,000 scheduled flights, so Alaska drew more than twice as many per flight.

Edge: Southwest. Fewer cancellations, fewer mishandled bags and less than half the complaints per flight.

Bag fees and the cheapest fare

Checked bags cost exactly the same. Alaska charges $45 for the first bag and $55 for the second on flights booked from April 10, 2026, and Southwest charges $45 and $55 on its Basic, Choice and Choice Preferred fares.

The free-bag rules mirror each other. Atmos Silver members and eligible Alaska and Hawaiian cardholders keep their free bags, and Southwest gives the first bag free to A-List members and Rapid Rewards cardmembers, and two to Choice Extra fares and A-List Preferred.

The real gap is the cheapest ticket. Both include a full-size carry-on, but Alaska’s Saver fare cannot be changed, and canceling it returns only a 50% credit, and only if you cancel at least 14 days before departure.

Saver fares booked after June 11, 2026 also earn no Atmos points or status points on flights from August 1, 2026. Saver passengers board last, in group F, and get a seat at check-in.

Southwest’s Basic fare has no cancel fee as long as you cancel at least 10 minutes before departure, though the credit expires 6 months after booking. It still earns 2 Rapid Rewards points per dollar.

On standard fares the two are close. Alaska charges no change or cancellation fee on Main and First Class, and Southwest none on any fare, with any fare difference paid at both.

Edge: Southwest. Bag fees tie, but its cheapest fare can be canceled for full credit and still earns points.

Seats and premium cabins

This is Alaska’s clearest win. It sells First Class and a Premium Class section with 4 inches more legroom than standard Main Cabin seats, plus early boarding and free drinks on most flights over 350 miles.

On long-haul flights its Boeing 787s carry lie-flat suites, part of a premium product Alaska calls Aurora. A premium economy cabin called Premium Reserve follows in 2028.

Southwest has no premium cabin. Its standard pitch on the 737-800 and MAX 8 dropped from 32 inches to 31 to make room for eight Extra Legroom rows, The Points Guy reported, and seats are now assigned rather than open.

Alaska does not publish a standard Main Cabin pitch on its cabin pages, so a like-for-like economy test is not possible from the airlines’ own figures.

Edge: Alaska. First Class, Premium Class and lie-flat seats, against cabins Southwest does not sell.

Where each one flies

Inside the US the two networks are about the same size. The DOT counted 108 US airports for Alaska’s network in July 2026 and 106 for Southwest in August.

They are not the same shape. Alaska is built around Seattle, where its network carried 56.1% of July 2026 arrivals, plus Portland, the California airports, Anchorage and, through Hawaiian, the islands.

Southwest’s strongholds are elsewhere: in August 2026 it flew 94.0% of arrivals at Chicago Midway, 75.2% at Baltimore/Washington and 50.7% at Las Vegas. It added its first Alaska flights in May 2026, seasonal once-daily service to Anchorage from Denver and Las Vegas.

Both fly to Hawaii and between the islands. Abroad, Southwest flies to Mexico, Central America and the Caribbean, from Cancun and Los Cabos to Aruba and Belize.

Alaska goes much further. Its Seattle international network reaches nine routes with Paris, Athens, Osaka and Papeete, which start in spring 2027, and it belongs to the oneworld alliance with American, British Airways and Japan Airlines.

Edge: Alaska. A tie at home, but Asia, Europe and oneworld partners Southwest cannot match.

Fleet

Southwest ended September 2026 with 803 aircraft, all Boeing 737s, and our Southwest fleet count breaks them down by type. It took 20 737 MAX 8s in the third quarter and retired 20 older jets.

Alaska Air Group’s operating fleet stood at 424 aircraft at the same date, up from 406 a year earlier. Alongside its 737s it flies 787s, Hawaiian’s Airbus A330s, A321neos and Embraer 175 regional jets.

One type keeps Southwest simple: one set of pilots, parts and cabin layout. The mixed fleet is what gives Alaska wide-bodies for Hawaii and long-haul flights.

Edge: Alaska. Wide-bodies and lie-flat seats that an all-737 fleet cannot offer.

Wi-Fi and entertainment

Both give free Wi-Fi to loyalty members, and T-Mobile sponsors both. Alaska’s free Starlink service was on 40% of its aircraft on October 26, 2026, with the Embraer 175s, A321neos and A330s done and the 737s and 787s still in progress. Where it is not installed yet, Wi-Fi costs $8 on most Alaska flights.

Southwest’s member Wi-Fi is free on select aircraft and costs $8 per device for non-members. It expects Starlink on every aircraft by fall 2027.

Alaska’s 787s and A330s have seatback screens, and its 737s and E175s stream free films to your own device. Southwest streams free movies, TV and live TV to your device on select planes.

Edge: Even. Free member Wi-Fi at both, mid-rollout to Starlink at both.

Status and points

Both programs change on January 1, 2027. Southwest’s A-List becomes Silver at 25 one-way flights or 35,000 tier qualifying points, A-List Preferred becomes Gold, and a new Platinum tier at 100 flights or 140,000 points brings unlimited Companion Pass trips.

Alaska’s Atmos Rewards keeps Silver at 20,000 status points. From 2027 members choose how to earn: 1 status point per mile flown, 5 per dollar of fare, or 500 per flight segment, and Saver fares earn nothing either way.

That makes the answer depend on your trips. On short or cheap flights, under 500 miles and under $100 in base fare, the segment option wins and Atmos Silver takes 40 flights, against 25 on Southwest.

On long trips Alaska pulls ahead. Seattle to Los Angeles is about 954 miles, so 21 one-way trips on the distance option reach Silver, whatever the fare.

Southwest still has the Companion Pass, which in 2026 takes 100 qualifying flights or 135,000 points and lets one person fly with you for taxes and fees. Alaska’s points go further abroad, on oneworld and partner airlines serving more than 1,100 destinations. For the tier detail, see A-List vs A-List Preferred.

Edge: Southwest for short, cheap trips; Alaska for long ones. The scorecard row measures the short-hop case, where Southwest needs 15 fewer flights.

Who should pick which

On the West Coast, where both are big, the choice is the one at the top of this page: Alaska for punctuality and a better seat, Southwest for fewer cancellations and a cheaper fare you can walk away from. For the wider field, see our ranking of the best airlines to fly in the US.