Southwest Airlines Flights to Las Vegas in 2026: Real Low-Fare Examples, Booking Steps, and Credit Rules

Southwest Airlines flights are usually what you search when you want a low fare you can actually book, a simple booking flow, and fewer surprise costs at checkout. You also want a fast way to spot the cheapest day without opening 20 browser tabs.

This guide gives you real low-fare examples to Las Vegas (time sensitive), a repeatable process you can use for any route, and a safe way to check flight credits before they expire. Fares move fast, sometimes within hours, so treat every price as a snapshot.

Disclaimer: This is general travel information, not financial advice. Always confirm live prices, fare rules, baggage details, and credit terms on Southwest.com before you book. Examples below depend on availability, route schedules, and taxes, and they can change at any time.

Southwest Airlines flights to Vegas: current low fare examples and what they include

When you see “$X one way” on Southwest Airlines flights to Las Vegas, it usually means the lowest advertised base fare for a single flight segment on a specific date. Taxes and fees can vary, and the seat count at that price may be small. If you search a few hours later (or pick a different departure time), the number can jump.

Also remember: “one-way” lets you mix and match. You can book a cheap outbound on Tuesday and a different return on Thursday, instead of paying weekend prices in both directions.

What’s typically included depends on the fare you select and what’s shown during booking. Before you pay, confirm these three items on the checkout screens:

• Total price (base fare plus taxes and fees)
• Baggage terms for your fare and route
• Change or cancellation terms shown for that specific itinerary

The examples below are meant to be searched and verified on Southwest’s site. If you’re booking from Germany, the same approach still works. You just want to double-check card currency settings, and you’ll want to save your confirmation email for credit tracking later.

Real low fare examples to Las Vegas (LAS) you can search right now

These examples are one-way fare snapshots for Southwest Airlines flights into Las Vegas (LAS). Availability can disappear quickly, and the same route can price higher at different times of day. Verify each option on Southwest.com.

• Reno (RNO) → LAS: from $28 one way (Wed, Nov 12, late 2025)
• Los Angeles (LAX) → LAS: from $31 one way (Wed, Dec 10, 2025)
• Los Angeles (LAX) → LAS: from $41 one way (Tue, Mar 3, 2026)
• San Diego (SAN) → LAS: from $35 one way (Tue, Jan 13, 2026)
• San Diego (SAN) → LAS: from $35 one way (Wed, Feb 4, 2026)
• Oakland (OAK) → LAS: from $49 one way (Wed, Feb 4, 2026)
• Denver (DEN) → LAS: from $69 one way (Sat, Feb 21, 2026)
• Chicago Midway (MDW) → LAS: from $80 one way (Sun, Jan 25, 2026)
• Dallas Love Field (DAL) → LAS: from $80 one way (Mon, Jan 26, 2026)
• San Jose (SJC) → LAS: from $120 one way (Tue, Jan 27, 2026)
• Sacramento (SMF) → LAS: from $104 one way (Wed, Mar 11, 2026)

If you’re flying into Vegas, pay attention to feeder cities that often show frequent sales or lots of flight options. In this set, that includes LAX, SAN, OAK, DEN, MDW, and DAL. More flights often means more price points to choose from, which helps when you’re flexible by a day.

Best days and months to find cheaper Southwest Airlines flights to Vegas

The pattern in the examples is simple: the cheapest Southwest Airlines flights to Las Vegas often land on Tuesdays and Wednesdays. Midweek demand is lower, and airlines tend to price accordingly.

Current deal snapshots also point to December 2025 looking especially cheap right now for some origins. That doesn’t mean every December date is a bargain. It means you should scan the whole month and pick the lowest day, then build your trip around it.

Your fastest move is Southwest’s Low Fare Calendar on its site. You scan an entire month in one view, find the lowest fare day, then compare departure times. If your schedule can flex by even one day, you often avoid the “Friday out, Sunday back” price spike.

How to find cheap Southwest Airlines flights, step by step

Cheap Southwest Airlines flights don’t come from luck, they come from a repeatable routine. You’re trying to do three things at once: pay less, waste less time searching, and reduce the stress of “Did I miss a better deal?”

Use this process for Las Vegas or any other city pair.

1. Start with flexible dates, not a fixed weekend.
   If you begin with rigid dates, you force yourself into whatever price is left.

2. Check nearby airports on both ends.
   For Vegas, your destination is usually LAS, but your origin might have choices. In Southern California, LAX isn’t the only option, and Bay Area travelers often compare OAK and SJC. Two searches can save real money.

3. Search one-way first, then add the return.
   One-way pricing is easier to compare. After you find a good outbound, repeat for the return. You’re building the cheapest pair.

4. Set a reminder and re-check at a sane cadence.
   Fares can change fast, but you don’t need to refresh every hour. If you have 2 to 6 weeks before travel, checking a few times per week is often enough.

5. Book when the price fits your budget and schedule.
   Waiting for the “perfect” fare can backfire. A good fare with good times is usually better than a slightly lower fare with bad hours and added ground costs.

Use the Low Fare Calendar and flexible dates to spot the lowest price fast

Here’s a clean flow you can repeat every time you shop for Southwest Airlines flights:

• Pick your route (example: LAX to LAS).
• Open the calendar view and scan the full month.
• Circle the lowest two or three days.
• Compare flight times and total trip length.
• Repeat for the return.

A quick checklist that tends to work:

• Midweek departures: Tuesday and Wednesday often price lower.
• Avoid peak weekends: Friday and Sunday are common price bumps.
• Shorter trips: Two to four nights often avoid expensive return days.

Prices can move quickly because the cheapest buckets sell out. If you see a fare that matches your plan, booking sooner can lock it in. You can still make changes later based on the rules shown during booking.

Compare total value, not just the fare (bags, seating, change rules)

A low number on the search results page isn’t the full story. The best Southwest Airlines flights for you are the ones that keep total trip cost down, including the parts people forget.

Before you click buy, confirm these items in the booking flow:

Baggage allowance: Know what you can bring without paying extra. Your bag plan changes the real cost of the trip.

Seating expectations and boarding basics: Southwest uses an open-seating approach with a boarding position. That means when you board can shape where you sit, especially on busy flights.

Change or cancellation terms: Look at what happens if you change dates, times, or passengers. The rules can differ by fare type and can change over time. Always read the exact conditions shown for your itinerary on checkout screens.

This is where a “cheap” fare can turn expensive. If you think you might change plans, the lowest fare isn’t always the best value.

Flight credits and changes: when do Southwest Airlines flight credits expire (and what you should do)

If you book Southwest Airlines flights often, you’ll eventually deal with flight credits. The key is to avoid guessing, because credit rules can depend on when the credit was created and what type it is. Policies can change, so your safest source is the details shown inside your account and on your booking confirmation.

As of December 2025, Southwest states that expiration can differ by credit creation date and credit type. Some older credits may not expire, while newer credits may have a “use by” deadline tied to the original booking date. The exact clock can also vary between transferable flight credits, basic fare credits, and vacation-related credits.

You don’t need to memorize rules. You need a clean habit: check every credit you have, record the dates, and book early enough to avoid a last-minute scramble.

How to check your Southwest flight credit expiration date in your account

Use this routine any time you cancel or change Southwest Airlines flights:

1. Sign in to your Southwest account.
2. Open the area for travel funds or flight credits (wording can vary).
3. Locate each credit and open its details.
4. Confirm the passenger name matches your ID.
5. Look for any “book by” or “travel by” dates, plus any restrictions.
6. Save the credit number and deadline in a note, or take a screenshot for your records.

If you’re managing travel for family members, keep each person’s credits separate. Name mismatches are a common reason credits don’t apply cleanly.

What to do if you cannot find credit details or your credit looks wrong

If something doesn’t add up, don’t try to “fix it” by booking random flights. Contact Southwest through the official support options on Southwest.com. Have your confirmation number, passenger name, and travel dates ready. That speeds up verification.

A simple safety rule: don’t post confirmation numbers or credit details in public comments or social media. Treat them like a password.

If you use points, Southwest has stated that Rapid Rewards points don’t expire (you should still check current program terms). You can review the program overview at Southwest Rapid Rewards.

Conclusion

You now have real Southwest Airlines flights to Las Vegas fare examples, a practical method to find low days fast, and a safe way to verify flight credits. Your next steps are simple: search with flexible dates, scan the Low Fare Calendar for the cheapest day, and book when you see a fare that fits your schedule.

Before checkout, confirm the total price, baggage terms, and change rules shown for your exact trip. Then save your confirmation so you can track any credits later. Final reminder: fares and policies can change at any time, so verify current prices and credit details on Southwest.com before you book.