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bagage cabine Only calculateur

A couple on a 7-day carry-on-only trip saves about $160 net in 2026: two travelers' checked-bag fees of $180 ($45 × 2 ways × 2 people) minus roughly $20 of mid-trip self-service laundry (2 loads each × $5) = $160. The free bag is not entirely free: the 3-1-1 liquids rule means a $20-50 light-shopping run at the destination, your bag must fit the 22×14×9 in sizer, and winter coats and boots are the real packing challenge.

Bag fees skipped (2 travelers × 7 days)
+$180
Mid-trip laundry (2 loads × $5 × 2)
−$20
Net savings for the couple
$160
2026 policies
Southwest charges for bags now · Spirit/Frontier charge for the carry-on too
Size & season constraint
22×14×9 in · winter is harder

Entrées

Travelers
Trip days
Airline (carry-on policy)

A free full-size carry-on plus a personal item comes with every standard fare. On basic economy, Delta and American still include the carry-on — but United reinstated its domestic basic-economy carry-on ban: personal item only, and a full-size roller costs a $65 gate-check fee unless you hold status or a co-brand card. The first checked bag you skip is the $45-50-each-way fee.

First checked-bag fee (each way)

First checked bag, each way, on the US majors after the April 2026 hikes: $45-50 — $90-100 round trip per bag — with JetBlue's dynamic pricing peaking near $59. Second bags cost more; this model assumes one checked bag per traveler.

Cost per laundry load (wash + dry)

A self-service wash+dry load runs $5-10 at US laundromats (hotel laundry service is far pricier). The honest model: re-wearing clothes mid-trip costs something — loads per traveler are 2 on trips of 7+ days, 1 on trips of 4-6 days, 0 on short breaks.

Season (packing difficulty — not money)

Light fabrics, sandals and small toiletry needs pack into one roller with room to spare. This is the season carry-on-only was made for.

Default scenario: 2 travelers · 7 days · majors · $45 bag fee · $5 laundry loads — edit inputs
Net savings flying carry-on only — 2026
$160
≈ 600 SAR (pegged rate)

2 travelers × 7 days = $180 saved in bag fees, minus $20 laundry = $160 net.

Formula: $45 fee x 2 ways x 2 travelers - 2 laundry load(s) x $5 x 2; loads = 2 on 7+ day trips, 1 on 4-6 days.
The savings math
Checked-bag fees skipped ($45 × 2 ways × 2)
+$180
Mid-trip laundry (2 × $5 × 2)
−$20
Net savings
$160
Airline policy — the honest 2026 picture

A free full-size carry-on plus a personal item comes with every standard fare. On basic economy, Delta and American still include the carry-on — but United reinstated its domestic basic-economy carry-on ban: personal item only, and a full-size roller costs a $65 gate-check fee unless you hold status or a co-brand card. The first checked bag you skip is the $45-50-each-way fee.

Carry-on sizer
22×14×9 in · 56×36×23 cm
Liquids rule
3-1-1 · 100 ml
Shopping at destination (honest context — outside the net)
$20-$50
Weather constraint: summer is the easy mode — light clothes pack small. Winter is harder: a coat, boots and layers can eat a quarter of your roller, so wear the heaviest items on the plane, use compression cubes, and be honest that a ski-grade trip may still deserve a checked bag. The season changes the packing difficulty, not the money math. The hidden one-time cost: replacing liquids and forgotten light items at the destination typically runs $20-50 per trip. It is a purchase, not a saving — we show it as honesty context and keep it OUT of the net-savings math unless you add it.
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FAQ

How much does a checked bag cost in 2026?

The first checked bag on the US majors (Delta, United, American) runs $45-50 each way after the April 2026 hikes — $90-100 round trip per person — with JetBlue dynamic pricing peaking near $59, and second bags cost more. That is exactly what carry-on-only skips: a couple saves about $180 in one trip, and a family of four clears $360 easily.

Is a carry-on free on US airlines?

Yes on the majors at standard fares: Delta, United, American, Alaska and JetBlue include a free full-size carry-on (22x14x9 in including wheels) plus a personal item under the seat. On basic economy, Delta and American still include it — but United reinstated its domestic basic-economy carry-on ban: personal item only, with a $65 gate-check fee for a full-size roller unless you hold status or a co-brand card. The other real exception: Spirit and Frontier charge for the full-size carry-on itself, while the small personal item stays free.

Does Southwest still fly bags free?

Not anymore: the Bags Fly Free era ended for bookings from May 28, 2025, and Southwest now charges for checked bags like everyone else — about $45 for the first bag each way under the April 9, 2026 schedule. The carry-on is still free though — which makes the carry-on-only strategy MORE valuable, not less, since the free option left on every airline is the carry-on.

What about Spirit and Frontier — does carry-on-only work there?

Barely: both ultra-low-cost carriers charge for the full-size carry-on ITSELF — roughly $30-100+ each way depending on when and where you pay (cheapest prepaid online, worst at the gate). The checked-bag saving is mostly cancelled by the carry-on fee, so the net is thin. The real lever on these airlines is personal-item-only packing (a small backpack under the seat) — that is always free.

How much do you actually save flying carry-on only?

The worked verdict for two travelers on a 7-day trip: $180 in skipped checked-bag fees ($45 × 2 ways × 2 people) minus about $20 of mid-trip laundry (2 loads each × $5) = roughly $160 net. The rule: the longer the trip and the more travelers, the better the math — a solo weekend traveler saves about $90 while a family of four on two weeks nets about $320.

What are the carry-on size and liquids rules?

The majors’ sizer is 22x14x9 inches (56x36x23 cm) including wheels and handles, and regional jets sometimes gate-check rollers free at the jetway. Liquids follow the 3-1-1 rule: containers up to 3.4 oz (100 ml), all inside one quart-size clear bag — practically meaning full-size toiletries get bought at the destination, and that light shopping run typically costs $20-50 per trip, a real cost worth counting.

Is winter realistic for carry-on-only?

Doable but honestly harder: a coat, boots and layers can eat a quarter of a 22-inch roller. The fixes: wear the heaviest items on the plane (your coat and boots do not count against the sizer), use compression cubes, and pick layerable fabrics over bulky pieces. Summer is the easy mode carry-on-only was made for — but the season changes the packing difficulty only, never the savings math.

Hotel laundry or laundromat — what does re-wearing clothes really cost?

One wash+dry load at a US self-service laundromat runs $5-10, while hotel laundry service charges per garment and multiplies fast. Practically: a 4-6 day trip needs one load per traveler, a 7+ day trip needs two — and that is the honest price of re-wearing clothes most savings calculators ignore, which is why this one subtracts it from the net instead of showing an inflated number.

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