Can I Change My Return Flight Southwest? | Change It Right

You can edit a Southwest return trip online or in the app; you’ll pay any fare difference and may receive flight credit.

You booked the trip. Plans shifted. Now you’re staring at that return flight and wondering what it’ll cost, what you’ll lose, and what clicks to press so you don’t cancel the wrong leg. This guide keeps it practical: when a change is a simple swap, when it turns into a re-price, and the checks that prevent messy surprises.

Southwest is known for allowing flight changes without a separate change fee. The tradeoff is that fares move, and the ticket type you bought shapes what happens when the new flight is cheaper.

Can I Change My Return Flight Southwest? Rules that shape the cost

Use a simple model: it’s not a “service fee” moment, it’s a “fare math” moment. If the new return flight costs more, you pay the difference. If it costs less, the remaining value becomes a credit under your fare’s rules.

Timing matters too. Southwest lets you make changes close to departure, so you’re not locked in days ahead of time. Seats and price buckets can still move fast, so check alternatives once you know your return won’t work.

One edge case: some itineraries have special constraints. If your trip includes partner segments, the partner carrier may control changes for that part of the booking.

Where to change your return flight without getting lost

You have two main self-serve options, plus phone support when the booking is complex.

Southwest website

On a laptop, the site is easiest for comparing times and fares. Open your trip, choose “Change,” then select only the return segment. Southwest’s Change Flight instructions can help if the buttons look different than you expected.

Southwest mobile app

The app is great for a clean time swap when you’re on the move. Open the trip, tap change, pick the return leg, then pick a new flight.

Step-by-step: Changing only the return leg

This sequence keeps your outbound untouched.

1. Pull up the reservation. Use your confirmation number and passenger name, or sign in.
2. Select “Change” and choose the return segment. Double-check the date and city pair before you continue.
3. Filter your options. Pick your time window, stops, and airport. Keep your connection time realistic if you’re switching routes.
4. Review the price difference. Southwest will show whether you owe more or whether value remains.
5. Confirm and save the new receipt. Screenshot the new flight details and keep the updated email confirmation.

Right after you confirm, scan the updated itinerary like a checklist: date, departure city, arrival city, time, and passenger names. It catches most mistakes while they’re still easy to fix.

What you’ll pay: Fare difference, not a separate change fee

Southwest’s change model is straightforward: no extra change fee, then a re-price based on the new flight you select. That’s why the same swap can cost $0 one day and $120 the next.

If you’re seeing a big jump, widen the time window by a few hours. Early morning and late-night returns often price differently than mid-day peaks. If you have a nearby airport option, check that too, then weigh ground costs.

When the new flight costs less, the leftover value becomes a credit tied to your fare’s rules. That leads to the part that trips up many travelers: what your ticket type allows.

Ticket types and credits: What changes after you change

Southwest sells multiple fare types, and the label matters once money is left on the table. Some fares keep credits tied to the original traveler. Some allow more flexibility, like credits that can be transferred under specific conditions.

If you’re unsure what you bought, open your receipt and look for the fare name next to each passenger. Use that fare name as your reference point when you decide whether to change now, cancel, or rebook.

If you’re comparing options, it can help to price the return as its own one-way in a new search tab. Southwest’s change screen shows the difference from what you already paid, while a fresh search shows the market price for that same seat right now. Seeing both numbers helps you decide whether a straight change is the best deal or whether canceling and rebooking is cleaner.

Use this table as a quick map while you’re deciding what move fits your situation.

Change scenario	What you pay	What you get back
Return flight costs more	Fare difference at checkout	Updated return flight
Return flight costs less	$0 change fee; new fare price applies	Credit for the leftover value, per fare rules
Same-day switch to an earlier flight	Often $0 if eligible fare and seats exist; fare rules still apply	New same-day return time
Switching airports in the same metro area	Fare difference for the new route	New airport pair; check ground costs
Changing from nonstop to connecting	Fare difference (sometimes lower)	New connection; verify layover length
Return leg tied to a companion booking	Change the primary traveler first; pay any fare difference	Companion rebooked after the primary change
Trip includes partner segments	Varies; partner may control changes	May need to change through partner carrier
Fare constraints on a roundtrip	May require upgrading or changing both legs	Change permitted once fare rules are satisfied

Same-day changes: When it’s worth trying

Same-day options can help when you finish early or want to land at a different time. Try the switch in the app first, then ask an agent if you hit a block. Seats can open as other travelers change plans, so a second check closer to departure can pay off.

Changing after you’ve checked in

If you already checked in for the return, a change can trigger a new check-in step. After the swap, open the updated trip and confirm your check-in status. If the system shows you as not checked in, complete check-in again so you still receive day-of-travel updates tied to your new flight.

Day-of-travel changes can move fast. If you’re at the gate and the app is slow, try the website on airport Wi-Fi. If both feel stuck, an agent can often see the same inventory and finalize the change faster.

Using flight credit without confusion

If your return change leaves value behind, that credit usually sits under your account or your confirmation number. The safest habit is to record three details in your notes app: the credit amount, the passenger name it belongs to, and the confirmation number tied to it. That way, you’re not hunting through old emails months later.

When you book a new trip, apply the credit early in the checkout flow so you can see the remaining balance before you pay. If the credit is tied to the original traveler, keep the passenger name matched exactly to what’s on the credit. A middle initial mismatch can slow things down when you’re trying to book on a deadline.

Changing vs canceling: Picking the move that protects your money

If you already know the return flight you want, a straight change is clean. If you’re still shopping across days or airports, canceling can be simpler because it frees you to start fresh.

When you cancel, Southwest may issue travel credit rather than a refund, based on fare rules and the circumstances. Refund eligibility can shift if the airline cancels the flight or makes a big schedule change. The U.S. Department of Transportation explains general refund rights on its airline refunds guidance page.

Use this quick filter:

• Change when you’ve found the return you want and the price difference is fine.
• Cancel when you want to re-shop from scratch, or when you’re not sure you’ll travel.
• Rebook entirely when a new one-way plan is cheaper than editing the roundtrip.

Table: Quick checks before you press confirm on a new return

These checks take two minutes. They prevent the common mistakes that show up after a rushed change.

Check	Why it matters	Fast way to verify
Correct segment selected	Prevents changing the outbound by mistake	Confirm date and city pair on the selection screen
Airport code matches your plan	A nearby airport can add hours of driving	Read the 3-letter code in the itinerary header
Layover length is realistic	Tight connections cause stress and missed flights	Check minutes between arrival and departure on the route details
Price difference is understood	A small fare bump can turn big at checkout	Review the final total before payment
Credit rules are clear	Some credits stay tied to the original traveler	Match your fare name to your receipt terms
Contact details are current	Flight updates go to the contact on file	Open traveler details and scan email and phone fields

Common snags and clean fixes

Return-only changes are blocked

This often traces back to fare rules on the reservation. If the system blocks a partial move, read the fare notes on your receipt and decide whether upgrading or changing both legs makes more sense.

Confirmation email is slow

Trust what shows inside your account first. Still, keep a screenshot of the updated itinerary until the email lands in your inbox.

Credit math looks off

Mixed fare types and multiple passengers can make the totals look odd. Track the math per passenger: old price, new price, then the difference. If it still doesn’t reconcile, call with the confirmation number open in front of you.

What to do right after you change your return

1. Update rides and plans. Adjust parking, pickup, hotel checkout, and any timed reservations.
2. Save proof. Store the new confirmation and screenshot the itinerary page.
3. Track any credit. Note the amount and where it sits, so it’s easy to use later.