For one bag, flying with it usually wins. A 45 lb suitcase-sized box came back at $89.07 to ship one way across the country, quoted 2026-08-19. Delta's own baggage page, read the same day, prices a first checked bag under 50 lb at 45 USD each way, prepaid. Shipping only pulls ahead once the trip has a reason a fee comparison alone will not show.
$89.07 to ship it. 45 USD to check it. The gap is the whole story on a single bag.
We described a 30 × 20 × 14 in hard-shell checked suitcase, packed for a two-week trip, 45 lb, and ran it from Newark, NJ 07102 to Los Angeles, CA 90001 through the SMKlog calculator on 2026-08-19. Every rate that came back is below.
| Carrier and service | Price | Estimated transit |
|---|---|---|
| UPS Ground | $89.07 | 6-7 business days |
| UPS Ground Saver | $113.00 | about 6 business days |
| FedEx SmartPost | $115.11 | 7-8 business days |
| FedEx Ground | $124.42 | 7-8 business days |
| UPS 3 Day Select | $145.20 | 5-6 business days |
| Bag | Delta's fee, each way |
|---|---|
| First standard checked bag, under 50 lb | 45 USD |
| Second standard checked bag, under 50 lb | 55 USD |
Cheapest to ship: $89.07 on UPS Ground. Cheapest to check on the same flight you are already taking: 45 USD. On one bag, one way, checking it is less than half the price of shipping it, and USPS was not even in the running — it returned no rate for this box on this lane.
Sending a bag ahead of a move, or home after a long stay, has no matching checked-bag fee to compare against — there is no flight for it to ride on. The comparison in this table only applies when a bag is riding the same itinerary as its owner.
Delta's own second-bag fee is 55 USD each way; a third bag runs higher still on most domestic fares. Once a trip needs several bags, the airline total climbs fast enough that a shipped box, sized to hold more than one suitcase's worth of items, can close the gap.
Dragging a 45 lb case through check-in, security and a connection is a cost that never shows up on a receipt. Shipping trades a week of transit time for not carrying the bag at all, which is worth something even when it costs more on paper.
None of that changes the baseline: for one ordinary checked bag on a flight you are already taking, the airline's own fee undercuts a shipped box by a wide margin on this lane. Run your own bag and route before assuming either answer holds for your trip.
Airline baggage fees change by carrier, fare class and how the bag is paid for, and carrier rate tables move with weight, zone and the week. Treat both tables above as one dated comparison and check your own airline and route before booking either way.
For a single bag under the airline's weight limit, flying with it is usually cheaper. We priced a 45 lb suitcase-sized box at $89.07 one way, Newark, NJ to Los Angeles, CA, quoted 2026-08-19. Delta's own first checked bag fee, read the same day, is 45 USD each way for a bag under 50 lb.
When you need the bag to arrive before or after your own flight, when the itinerary does not allow a checked bag at the fare you bought, or when carrying it through the airport is the problem you are trying to solve rather than the fee. None of those show up in a straight fee comparison.
55 USD each way for a second standard checked bag under 50 lb, per Delta's own baggage page, read 2026-08-19. Two checked bags on one flight run 100 USD each way at those prepaid rates, still under a single shipped box on most domestic parcel lanes.
Yes. The $89.07 figure is the full checkout total for the cheapest of five rates returned, SMKlog's charge already inside it, not a base carrier rate with fees added on top.
No. USPS returned no rate for this box on this lane. UPS and FedEx both priced it; UPS Ground was the cheapest of the two at $89.07.