Choosing between Southwest and Delta for your next flight isn’t as simple as comparing ticket prices. These are two of the biggest and most reliable airlines in the U.S., but they cater to very different kinds of travelers.
I’ve flown with both airlines countless times, on cross-country trips, quick weekend getaways, international legs, and last-minute business travel. And what I’ve learned is this: the better airline isn’t about who’s cheaper or bigger. It’s about which one matches how you like to travel.
If you’re after simplicity, flexibility, and budget control, Southwest makes it easy to fly without worrying about fees. But if you’re chasing comfort, global reach, and elite perks, Delta delivers a more polished and premium experience.
In this guide, I’ll walk you through what each airline does best, from fares and seats to baggage, loyalty, and in-flight comfort, so you can book the one that’s actually better for your next trip.
Fare Structure: Which Airline Offers the Best Value?
Southwest:
Southwest’s pricing is straightforward. What you see is what you get, no extra fees for bags or seat selection.
- Two free checked bags
- No change or cancellation fees
- Fares split into tiers: Wanna Get Away, Anytime, and Business Select
You often find cheaper base fares on Southwest, especially on short-haul or mid-tier domestic routes. They’re excellent for flexible travelers or families.
Delta:
Delta uses dynamic pricing with a wider range of fare types: Basic Economy, Main Cabin, Comfort+, First Class, and Delta One (on long-haul).
- No free checked bags in Main Cabin unless you hold elite status or a Delta Amex card
- Change fees waived on most fares, but Basic Economy has restrictions
- Pricing fluctuates heavily by route and demand
My Take:
If price and flexibility are top priorities, and you travel light, Southwest usually wins. But if you’re flying longer routes or need premium options, Delta offers better value per dollar.
Baggage Policy: Which Is More Generous?
| Feature | Southwest | Delta |
| Carry-on Bag | Free | Free |
| Checked Bags | 2 free per person | $30 for 1st bag, $40 for 2nd |
| Oversize Bag Fees | Moderate | High |
| Sporting Equipment | Free if under 50 lbs | Fees apply |
Winner: Southwest
Two free checked bags is unbeatable, especially for families or long trips.
Seating and Boarding Process
Southwest:
No assigned seating. Instead, passengers board in A/B/C groups based on check-in time or upgraded boarding purchase.
Pros:
- You can pick any seat available
- No middleman assigning bad seats
Cons:
- Stressful if you check in late
- Families may not get seats together unless they pay for EarlyBird Check-In
Delta:
Assigned seating at booking. You choose your seat in all classes except Basic Economy.
Pros:
- Guaranteed seat
- Better for groups and families
- Upgrades available for elite members and via Amex offers
Cons:
- Limited free seat choices in Basic Economy
- Some seats may cost extra in Main Cabin
My Take: I prefer Delta’s assigned seating, especially on longer flights. If you care where you sit, Delta is far more predictable and relaxing.
In-Flight Experience: Comfort, Wi-Fi, and Service
| Feature | Southwest | Delta |
| Seat Pitch (Economy) | 31–33 inches | 30–32 inches |
| Wi-Fi | $8/day | Free messaging + paid Wi-Fi |
| Entertainment | Live TV, free movies via app | Seatback screens on most jets |
| Power Outlets | Limited | Available on most flights |
| Free Snacks/Drinks | Yes | Yes |
Delta generally provides a more premium onboard experience, particularly on newer aircraft like the A321neo or A220, which have seatback screens, USB power, and more spacious cabins.
Southwest’s cabins are clean and consistent, but more basic.
Winner: Delta, especially for business travelers or longer flights.
Route Network and International Travel
Southwest:
- 100+ domestic destinations
- Limited international service (Caribbean, Mexico, Central America)
- All flights are point-to-point; no long-haul
Delta:
- 300+ destinations globally
- Full SkyTeam alliance network
- Hubs in major U.S. cities and international gateways
- Offers Delta One suites for international business class
If you need to fly overseas or want access to international upgrades, lounges, and alliance perks, Delta is the clear choice.
Loyalty Programs: SkyMiles vs Rapid Rewards
Southwest Rapid Rewards:
- Simple earn-and-burn model
- Points tied to fare price
- No blackout dates
- Companion Pass = massive value for frequent domestic flyers
Delta SkyMiles:
- Dynamic pricing
- Can redeem miles for upgrades, lounges, or partner awards
- Medallion Status comes with upgrades, priority boarding, and more
- Miles never expire
My Take:
If you’re focused on domestic flying and want maximum value from points, Southwest’s Rapid Rewards wins. But if you want elite benefits, global upgrades, or fly long-haul, Delta’s SkyMiles program is more powerful, when used wisely.
On-Time Performance and Reliability
- Delta consistently ranks among the top U.S. airlines for on-time arrivals and customer satisfaction.
- Southwest performs well but has faced operational challenges, including widespread delays and system outages.
Winner: Delta in operational reliability, especially for tight connections and business travel.
Customer Service and Flexibility
Both airlines score well in customer service rankings, but they excel in different ways:
- Southwest shines in its no-fee change policy, generous baggage allowance, and transparent pricing.
- Delta stands out for elite service, seamless app experience, and proactive flight rebooking during disruptions.
Which Airline Is Better?
It depends on what matters most to you:
Choose Southwest if:
- You value low fares with no hidden fees
- You’re flying domestic routes only
- Flexibility and free changes are essential
- You want to earn and use points easily
Choose Delta if:
- You want assigned seating and premium service
- You fly internationally or need elite perks
- You value seatback entertainment and better aircraft
- You use an Amex Delta card or want Medallion status
My personal choice:
For business travel, international trips, and consistency, I go with Delta. For family vacations or weekend getaways where cost and flexibility matter most, Southwest is hard to beat.
Both airlines do what they do well. The trick is knowing which one fits your trip.
FAQs: Southwest vs Delta
Which airline is cheaper, Southwest or Delta?
Southwest usually offers lower fares, especially on domestic routes.
Do both airlines include bags in the ticket price?
Southwest includes 2 free checked bags; Delta charges unless you have status or a credit card.
Can I choose my seat on Southwest?
No, Southwest uses open seating. You choose your seat when you board.
Does Delta offer more international flights?
Yes, Delta serves over 300 global destinations and is part of the SkyTeam alliance.
Which airline has better in-flight entertainment?
Delta. Most planes have seatback screens and free streaming.
Which loyalty program is better?
Southwest is better for domestic flyers who want simple rewards. Delta is better for travelers who want elite perks and international options.
Can I earn points with a credit card on both airlines?
Yes. Both offer branded Amex or Visa cards that help you earn miles or points faster.
Which airline is better for families?
Southwest offers more flexibility with free bags and no change fees, making it ideal for families.
Which airline is more reliable?
Delta ranks higher in on-time performance and overall reliability.