Southwest Checked Bag Fee Calculator
Estimate what checked bags will cost you on Southwest based on your fare, status, bag count, and route. Built for the 2026 post-policy-change pricing era.
- With wanna get away fare and none, you get 0 free standard checked bag(s).
- You will pay for 2 standard bag(s) at $35/$45.
- Round-trip total is $160; one-way equivalent is $80.
- A Rapid Rewards co-brand credit card (~$69–149/yr) pays for itself in 2 trip(s) at this fee level.
Wondering how much are checked bags on Southwest now that the airline has ended its long-running 'two bags fly free' policy? This calculator estimates your total checked baggage fees based on your fare class, A-List or Rapid Rewards credit card status, the number of bags you're checking, and whether your route is domestic or international. For example, a typical traveler on a Wanna Get Away fare checking two standard bags on a domestic flight should expect around $35 for the first bag and $45 for the second — roughly $80 round trip per direction.
Southwest's 2026 baggage rules now mirror most legacy U.S. carriers, with a few important exceptions: Business Select fares, A-List Preferred members, and most Rapid Rewards co-branded credit cardholders still receive at least one free checked bag. Overweight bags (51–100 lb) and oversize bags (63–80 linear inches) carry additional surcharges of $75–$125 each. Use the tool below to model your trip, then read the methodology to understand how each input changes the final number and where the common gotchas hide.
How it works: Pick your fare class and status, enter how many bags you're checking, choose domestic or international, and the calculator returns per-bag fees, total fees per direction, and round-trip cost — plus personalized tips.
Fees are charged per direction, not per trip. A round trip with 2 checked bags on a Wanna Get Away fare costs $160 total ($80 each way), not $80. Bags are NOT accepted if they exceed 100 lb or 80 linear inches. You must ship via cargo (UPS, FedEx, or Southwest Cargo) at significantly higher rates ($150–400+ depending on size). Baggage fees are generally non-refundable even if your flight is canceled or you no-show — request a refund through Customer Relations if your bags traveled but you did not.
Southwest Checked Bag Fees in 2026: What Changed and What It Costs
After decades of branding itself around 'Bags Fly Free,' Southwest joined the rest of the U.S. industry and began charging for checked baggage in 2025. By 2026, the structure has stabilized. Here is exactly what you'll pay, who is exempt, and how to minimize the damage.
Southwest standard checked bag fees by route — 2026
| Bag | Domestic (within U.S.) | International / Caribbean / Mexico | Notes |
|---|---|---|---|
| 1st checked bag | $35 | $35 | Same price most routes |
| 2nd checked bag | $45 | $55 | International premium |
| 3rd bag (excess) | $150 | $150 | Per bag, each direction |
| Overweight 51–100 lb | +$100 | +$100 | On top of base fee |
| Oversize 63–80 in | +$125 | +$125 | Linear inches (L+W+H) |
| Over 100 lb or 80 in | Not accepted | Not accepted | Must ship via cargo |
Who still gets free checked bags on Southwest in 2026
| Status / Fare | Free Bags | Annual Cost | Break-even Trips |
|---|---|---|---|
| Business Select fare | 2 per ticket | $50–150 fare premium | 1 trip with 2 bags |
| Anytime fare | 1 per ticket | $30–80 fare premium | 1 trip with 1 bag |
| A-List Preferred (50+ flights/yr) | 1 per ticket | Earned via flying | Automatic |
| Rapid Rewards Plus card | 1 per ticket | $69/year | ~2 round trips |
| Rapid Rewards Premier card | 1 per ticket | $99/year | ~2 round trips |
| Rapid Rewards Priority card | 1 per ticket | $149/year | ~3 round trips |
| Wanna Get Away + no card | 0 | — | Pays full fees |
How Much Are Checked Bags on Southwest Now?
As of 2026, Southwest charges $35 for the first checked bag and $45 for the second on domestic routes, with international routes (Caribbean, Mexico, Central America) running $35 and $55 respectively. A third or additional excess bag is $150 each, per direction. This pricing aligns Southwest with American, Delta, and United, ending what was for nearly 50 years the airline's signature differentiator. A family of four flying round trip with one bag each at the lowest fare class now pays $280 in baggage fees alone — roughly the cost of a fifth ticket on a short-haul route.
Who Still Flies Bags-Free in 2026?
Free bag benefits did not disappear entirely. Business Select fares retain two free checked bags. Anytime fares include one. A-List Preferred elite members (50 qualifying one-way flights or 70,000 tier-qualifying points per year) get one free bag regardless of fare. Most importantly for everyday travelers, all three Rapid Rewards consumer credit cards — Plus ($69), Premier ($99), and Priority ($149) — include one free checked bag for the primary cardholder. For a traveler who flies Southwest twice a year with one bag, the $69 Plus card pays for itself on the first round trip and still earns rewards points.
Why Activity Level (How Often You Fly) Matters
The right strategy depends entirely on flight frequency. Occasional travelers (1–2 round trips per year) should just pay the fee or grab the $69 Plus card. Regular travelers (4–10 round trips per year) save the most with a co-branded credit card, since the bag benefit alone saves $140–700 per year. Frequent fliers (25+ one-ways per year) should target A-List status; serious road warriors at 50+ one-ways unlock A-List Preferred and free bags for themselves plus companions on the same reservation in some cases. Buying Business Select repeatedly to chase free bags rarely pencils out unless you also value priority boarding A1–A15.
How the Calculator Handles Overweight and Oversize Bags
Bags between 51 and 100 pounds incur a flat $100 overweight surcharge, on top of the base fee — so a single overweight bag on a Wanna Get Away ticket actually costs $135 ($35 base + $100). Oversize bags measuring 63 to 80 linear inches (length + width + height combined) add $125. Standard checked bag size is up to 62 linear inches and 50 pounds. Bags exceeding 100 pounds or 80 linear inches are not accepted as standard baggage — they must ship as cargo. Sports equipment like skis, golf clubs, and surfboards is generally treated as a standard bag if it fits within the dimension limits, even if technically oversize.
Common Mistakes That Inflate Your Baggage Bill
The most common $100+ mistake is packing a single bag at 52–55 pounds when redistributing 3–5 pounds to a carry-on or second checked bag would have kept everything in standard pricing. The second is forgetting to add an authorized cardholder to a Rapid Rewards credit card — the free bag benefit applies to the cardholder and up to eight companions on the same reservation, but only if booked correctly. Third is checking a 3rd bag at $150 when shipping it ground via UPS or FedEx (~$40–70 for a standard box, 2–5 days) is cheaper and arrives without you carrying it through the airport. Always weigh and measure at home with a luggage scale.
When 0 Bags Makes Sense: The Carry-On Loophole
Southwest still allows one free carry-on (24 x 16 x 10 in) plus one personal item (18.5 x 8.5 x 13.5 in) — these have NOT been monetized and remain free for all fare classes. A surprising number of travelers can fit a 4–5 day domestic trip into just the carry-on plus a backpack personal item, completely avoiding checked bag fees. The trade-off is boarding position: without A-List or a Business Select fare, you may board in the B or C group, and overhead bin space can run out. Paying $30–50 for EarlyBird Check-In is often cheaper than checking a bag and gives you bin priority.
Edge Cases: Military, Strollers, Medical Equipment
Active-duty U.S. military with orders fly with up to five free checked bags (including overweight up to 100 lb) on personal or orders travel — one of the most generous policies in the industry. Strollers and child car seats fly free and do not count toward your bag allowance. Medical assistive devices (CPAP machines, wheelchairs, mobility scooters) are also free and unlimited under DOT rules. Pet carriers, however, count as your one carry-on and cost $125 each way in-cabin. If any of these apply, your calculator output may overstate fees — call Southwest at 1-800-435-9792 to confirm before booking.
How This Calculator Works: Methodology & Parameter Explanations
Core formula:
TotalFee = [max(0, Bags - FreeBags) priced sequentially as ($35, $45 or $55, then $150 each) + Overweight×$100 + Oversize×$125] × Directionswhere:
Bags— Number of standard checked bags per person, per direction (bags)FreeBags— Free bag allowance from fare class plus status (capped at 2) (bags)Overweight— Bags weighing 51–100 lb (bags)Oversize— Bags measuring 63–80 linear inches (bags)Directions— 1 for one-way, 2 for round trip
How to apply: The formula prices chargeable bags sequentially: the first chargeable bag (after free allowance is consumed) costs $35, the second $45 (domestic) or $55 (international), and any beyond the second costs $150 each as excess baggage. Multiply by 2 for round trips since fees are charged per direction.
Worked example: Sarah books a Wanna Get Away round trip from Dallas to Phoenix with the Rapid Rewards Priority card. She checks 2 standard bags. Her free allowance is 1 (from the card). Chargeable bags = 2 - 1 = 1. The first chargeable bag is the 2nd overall, priced at $45 domestic. Per direction: $45. Round trip: $45 × 2 = $90. Her $149/year card pays for itself in under 2 trips like this.
Alternative formulas
Pre-2025 Southwest 'Bags Fly Free': TotalFee = max(0, Bags - 2) × $75
When to use: Historical only. Through early 2025 Southwest included two free bags for every passenger regardless of fare. The 2025 policy change ended this. Useful only when comparing total trip cost across years.
Legacy carrier (AA/DL/UA) baggage formula: TotalFee = ($35 first + $45 second + $150 each thereafter) × Directions
When to use: Use to compare Southwest against American, Delta, or United on the same route. As of 2026, Southwest's pricing is nearly identical to the legacy three, so the differentiator is now status/credit card overlap, not the published fee.
Parameter explanations
| Input | Unit | What it means | Impact on results |
|---|---|---|---|
| Fare class | — | Which Southwest fare bucket you booked: Wanna Get Away, Wanna Get Away Plus, Anytime, or Business Select. | Determines included free bags. Business Select includes 2, Anytime includes 1, both Wanna Get Away tiers include 0. Upgrading fare can be cheaper than paying bag fees if the price difference is under ~$80. |
| Status or credit card | — | Your Rapid Rewards elite tier or Southwest co-branded credit card status, which can grant a free bag independent of fare. | A-List Preferred and any Rapid Rewards credit card add 1 free bag. Stacked with a fare benefit, total free bags cap at 2 — you cannot stack to 3 free bags. |
| Checked bags (per person, one-way) | bags | How many standard checked bags (under 50 lb, under 62 linear inches) you plan to check per direction. | Bags within your free allowance cost $0; bag 1 (chargeable) is $35; bag 2 is $45 domestic or $55 international; bags 3+ jump to $150 each. The third bag is where costs explode. |
| Overweight bags (51–100 lb) | bags | Bags that exceed the 50 lb standard weight limit but are under 100 lb. | Adds a flat $100 per overweight bag on top of the base fee. Easily avoided with a $15 luggage scale and redistribution to carry-on. |
| Oversize bags (63–80 linear in) | bags | Bags whose length + width + height exceeds 62 inches but is under 80 inches. | Adds $125 per oversize bag. Common with golf travel cases, large duffels, and musical instrument cases. |
| Route type | — | Whether your flight is within the United States or to international destinations Southwest serves (Mexico, Caribbean, Central America). | Only affects the 2nd bag price ($45 vs $55). Has no effect if you check 0 or 1 bag. |
| Trip direction | — | Whether the fees should be calculated one-way or for a round trip. | Round trip simply doubles all per-direction fees, since Southwest charges bags separately on each segment. |
Assumptions
All pricing reflects Southwest's published 2026 baggage fee schedule for standard itineraries. Promotional fare bundles or wholesale travel agency bookings may differ.
Free bag benefits cap at 2 per person, not stacked unlimited — If you have Business Select (2 free) plus a credit card (1 free), you do not get 3 free bags — Southwest caps the combined free allowance at 2. The calculator enforces this cap.
Headline example numbers are illustrative, not hard-coded — The article references typical scenarios (2 bags, family of four, etc.) as examples only. The calculator computes from your actual inputs and works for any combination from 0 to 6 bags.
Overweight and oversize surcharges are additive — a bag that is both overweight AND oversize incurs both surcharges plus the base fee (potentially $35 + $100 + $125 = $260 for a single bag).
Active-duty military, infant/child equipment, mobility aids, and certain sports equipment exemptions are NOT modeled — call Southwest to confirm if these apply to you.
How to use this calculator
- Pick the fare you actually booked — Check your confirmation email — the fare class is listed under each segment. Do not assume Wanna Get Away unless you bought the cheapest option.
- Add your status or credit card — If you hold any Rapid Rewards consumer credit card (Plus, Premier, or Priority), select 'Rapid Rewards credit card.' Authorized users on a primary cardholder's account also get the bag benefit when booked under the cardholder's Rapid Rewards number.
- Count bags realistically per person — The calculator computes for one passenger. For a family, multiply the result by the number of passengers with bags. Each child with their own ticket pays the same fees as an adult.
- Check weight and dimensions at home — Weigh every checked bag and measure linear inches (L+W+H). Bags within 49.5 lb and 61 linear inches stay in standard pricing. Adjust the overweight/oversize fields only if you confirm the surcharge will apply.
- Compare against alternatives — If the total exceeds $100 round trip, compare with the cost of a Rapid Rewards credit card ($69–149/year), upgrading to Anytime fare, or shipping a box ground via UPS/FedEx ($40–70).